diff --git a/OutOfSchool/OutOfSchool.DataAccess/Models/Provider.cs b/OutOfSchool/OutOfSchool.DataAccess/Models/Provider.cs
index 3942ef2022..f9c938ec8d 100644
--- a/OutOfSchool/OutOfSchool.DataAccess/Models/Provider.cs
+++ b/OutOfSchool/OutOfSchool.DataAccess/Models/Provider.cs
@@ -57,7 +57,7 @@ public class Provider
         [DataType(DataType.PhoneNumber)]
         [RegularExpression(
             @"([\d]{10})",
-            ErrorMessage = "Phone number format is incorrect. Example: 380 50-123-45-67")]
+            ErrorMessage = "Phone number format is incorrect. Example: 0501234567")]
         [DisplayFormat(DataFormatString = "{0:+38 XXX-XXX-XX-XX}")]
         public string PhoneNumber { get; set; } = string.Empty;
 
diff --git a/OutOfSchool/OutOfSchool.DataAccess/Models/User.cs b/OutOfSchool/OutOfSchool.DataAccess/Models/User.cs
index 75beee1e6b..68132e4005 100644
--- a/OutOfSchool/OutOfSchool.DataAccess/Models/User.cs
+++ b/OutOfSchool/OutOfSchool.DataAccess/Models/User.cs
@@ -19,5 +19,7 @@ public class User : IdentityUser
         public string FirstName { get; set; }
 
         public string Role { get; set; }
+
+        public bool IsRegistered { get; set; }
     }
 }
\ No newline at end of file
diff --git a/OutOfSchool/OutOfSchool.DataAccess/Models/Workshop.cs b/OutOfSchool/OutOfSchool.DataAccess/Models/Workshop.cs
index 787b1e5626..809e7a440f 100644
--- a/OutOfSchool/OutOfSchool.DataAccess/Models/Workshop.cs
+++ b/OutOfSchool/OutOfSchool.DataAccess/Models/Workshop.cs
@@ -18,8 +18,8 @@ public class Workshop
         [DataType(DataType.PhoneNumber)]
         [Required(ErrorMessage = "Phone number is required")]
         [RegularExpression(
-            @"([\d]{9})",
-            ErrorMessage = "Phone number format is incorrect. Example: 380 50-123-45-67")]
+            @"([\d]{10})",
+            ErrorMessage = "Phone number format is incorrect. Example: 0501234567")]
         [DisplayFormat(DataFormatString = "{0:+38 XXX-XXX-XX-XX}")]
         public string Phone { get; set; } = string.Empty;
 
@@ -37,11 +37,11 @@ public class Workshop
         public string Instagram { get; set; } = string.Empty;
 
         [Required(ErrorMessage = "Children's min age is required")]
-        [Range(0, 16, ErrorMessage = "Min age should be a number from 0 to 16")]
+        [Range(0, 18, ErrorMessage = "Min age should be a number from 0 to 18")]
         public int MinAge { get; set; }
 
         [Required(ErrorMessage = "Children's max age is required")]
-        [Range(0, 16, ErrorMessage = "Max age should be a number from 0 to 16")]
+        [Range(0, 18, ErrorMessage = "Max age should be a number from 0 to 18")]
         public int MaxAge { get; set; }
 
         [Required(ErrorMessage = "Specify how many times per week lessons will be held")]
diff --git a/OutOfSchool/OutOfSchool.DataAccess/Repository/IProviderRepository.cs b/OutOfSchool/OutOfSchool.DataAccess/Repository/IProviderRepository.cs
index bf825d3f01..9ff6ed52f1 100644
--- a/OutOfSchool/OutOfSchool.DataAccess/Repository/IProviderRepository.cs
+++ b/OutOfSchool/OutOfSchool.DataAccess/Repository/IProviderRepository.cs
@@ -5,5 +5,7 @@ namespace OutOfSchool.Services.Repository
     public interface IProviderRepository : IEntityRepository<Provider>
     {
         bool Exists(Provider entity);
+
+        bool ExistsUserId(string id);
     }
 }
diff --git a/OutOfSchool/OutOfSchool.DataAccess/Repository/ProviderRepository.cs b/OutOfSchool/OutOfSchool.DataAccess/Repository/ProviderRepository.cs
index 2900c39633..1dcb7d538a 100644
--- a/OutOfSchool/OutOfSchool.DataAccess/Repository/ProviderRepository.cs
+++ b/OutOfSchool/OutOfSchool.DataAccess/Repository/ProviderRepository.cs
@@ -22,6 +22,13 @@ public ProviderRepository(OutOfSchoolDbContext dbContext)
         /// <returns>Bool.</returns>
         public bool Exists(Provider entity) => db.Providers.Any(x => x.EdrpouIpn == entity.EdrpouIpn || x.Email == entity.Email);
 
+        /// <summary>
+        /// Checks if the user is trying to create second account.
+        /// </summary>
+        /// <param name="id">User id.</param>
+        /// <returns>Bool.</returns>
+        public bool ExistsUserId(string id) => db.Providers.Any(x => x.UserId == id);
+
         /// <summary>
         /// Add new element.
         /// </summary>
diff --git a/OutOfSchool/OutOfSchool.IdentityServer/Controllers/AuthController.cs b/OutOfSchool/OutOfSchool.IdentityServer/Controllers/AuthController.cs
index d9226d0d6c..013c83a9f4 100644
--- a/OutOfSchool/OutOfSchool.IdentityServer/Controllers/AuthController.cs
+++ b/OutOfSchool/OutOfSchool.IdentityServer/Controllers/AuthController.cs
@@ -4,6 +4,7 @@
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Logging;
+using OutOfSchool.IdentityServer.Enums;
 using OutOfSchool.IdentityServer.ViewModels;
 using OutOfSchool.Services.Models;
 
@@ -136,14 +137,14 @@ public async Task<IActionResult> Register(RegisterViewModel model)
                 return View(model);
             }
 
-            if (Request.Form["Provider"].Count == 1)
+            if (Request.Form[Role.Provider.ToString()].Count == 1)
             {
-                model.Role = "provider";
+                model.Role = Role.Provider.ToString().ToLower();
             }
             else
-            if (Request.Form["Parent"].Count == 1)
+            if (Request.Form[Role.Parent.ToString()].Count == 1)
             {
-                model.Role = "parent";
+                model.Role = Role.Parent.ToString().ToLower();
             }
             else
             {
@@ -160,6 +161,7 @@ public async Task<IActionResult> Register(RegisterViewModel model)
                PhoneNumber = model.PhoneNumber,
                CreatingTime = DateTime.Now,
                Role = model.Role,
+               IsRegistered = false,
             };
 
             var result = await userManager.CreateAsync(user, model.Password);
diff --git a/OutOfSchool/OutOfSchool.IdentityServer/Data/Migrations/OutOfSchoolMigrations/OutOfSchoolDbContextModelSnapshot.cs b/OutOfSchool/OutOfSchool.IdentityServer/Data/Migrations/OutOfSchoolMigrations/OutOfSchoolDbContextModelSnapshot.cs
index 7c83f44e5c..897afbb6be 100644
--- a/OutOfSchool/OutOfSchool.IdentityServer/Data/Migrations/OutOfSchoolMigrations/OutOfSchoolDbContextModelSnapshot.cs
+++ b/OutOfSchool/OutOfSchool.IdentityServer/Data/Migrations/OutOfSchoolMigrations/OutOfSchoolDbContextModelSnapshot.cs
@@ -590,6 +590,9 @@ protected override void BuildModel(ModelBuilder modelBuilder)
                     b.Property<string>("FirstName")
                         .HasColumnType("nvarchar(max)");
 
+                    b.Property<bool>("IsRegistered")
+                        .HasColumnType("bit");
+
                     b.Property<DateTime>("LastLogin")
                         .HasColumnType("datetime2");
 
diff --git a/OutOfSchool/OutOfSchool.IdentityServer/Enums/Role.cs b/OutOfSchool/OutOfSchool.IdentityServer/Enums/Role.cs
new file mode 100644
index 0000000000..44a8e00728
--- /dev/null
+++ b/OutOfSchool/OutOfSchool.IdentityServer/Enums/Role.cs
@@ -0,0 +1,8 @@
+namespace OutOfSchool.IdentityServer.Enums
+{
+    public enum Role
+    {
+        Provider,
+        Parent,
+    }
+}
diff --git a/OutOfSchool/OutOfSchool.IdentityServer/Views/Auth/Register.cshtml b/OutOfSchool/OutOfSchool.IdentityServer/Views/Auth/Register.cshtml
index cb7e046322..b73fc67911 100644
--- a/OutOfSchool/OutOfSchool.IdentityServer/Views/Auth/Register.cshtml
+++ b/OutOfSchool/OutOfSchool.IdentityServer/Views/Auth/Register.cshtml
@@ -78,7 +78,7 @@
                     <label class="registration_label" asp-for="PhoneNumber">@SharedLocalizer["Phone"]<span class="registration_star">*</span></label>
                     <div class="registration_phone">
                         <div class="registration_phone-code">+38</div>
-                        <input class="registration_input" type="text" asp-for="PhoneNumber" id="phone_number">
+                        <input class="registration_input" maxlength="10" type="text" asp-for="PhoneNumber" id="phone_number">
                     </div>
                     <div>
                         <span asp-validation-for="PhoneNumber"></span>
@@ -95,7 +95,7 @@
                     <div>
                         <label class="registration_label" asp-for="Password">@SharedLocalizer["Password"]<span class="registration_star">*</span></label>
                         <input class="registration_input registration_input-password" type="Password" asp-for="Password" id="password">
-                        <div class="registration_privacy">
+                        <div class="registration_privacy_password">
                             <img src="/icons/ic_eye.svg" alt="eye" class="registration_eye" id="password_eye">
                         </div>
                     </div>
@@ -112,7 +112,7 @@
                     <div>
                         <label class="registration_label" asp-for="ConfirmPassword">@SharedLocalizer["Confirm password"]<span class="registration_star">*</span></label>
                         <input class="registration_input registration_input-password" type="password" asp-for="ConfirmPassword" id="repeat_password">
-                        <div class="registration_privacy">
+                        <div class="registration_privacy_confirm_password">
                             <img src="/icons/ic_eye.svg" alt="eye" class="registration_eye" id="confirm_password_eye">
                         </div>
                     </div>
diff --git a/OutOfSchool/OutOfSchool.IdentityServer/wwwroot/css/site.css b/OutOfSchool/OutOfSchool.IdentityServer/wwwroot/css/site.css
index 38bf57334b..97f47e2030 100644
--- a/OutOfSchool/OutOfSchool.IdentityServer/wwwroot/css/site.css
+++ b/OutOfSchool/OutOfSchool.IdentityServer/wwwroot/css/site.css
@@ -381,20 +381,22 @@ a {
   color: #ffffff;
   cursor: pointer;
 }
-.registration_privacy {
-  border: none;
-  outline: none;
-  background: inherit;
-  position: absolute;
-  bottom: 0;
-  right: 8px;
-  width: 30px;
-  height: 30px;
-  display: flex !important;
-  align-items: center !important;
-  justify-content: center !important;
-}
-.registration_privacy img {
+.registration_privacy_password,
+.registration_privacy_confirm_password {
+    border: none;
+    outline: none;
+    background: inherit;
+    position: absolute;
+    bottom: 0;
+    right: 8px;
+    width: 30px;
+    height: 30px;
+    display: flex !important;
+    align-items: center !important;
+    justify-content: center !important;
+}
+.registration_privacy_password img,
+.registration_privacy_confirm_password img {
   height: 16px;
   width: auto;
 }
diff --git a/OutOfSchool/OutOfSchool.IdentityServer/wwwroot/js/site.js b/OutOfSchool/OutOfSchool.IdentityServer/wwwroot/js/site.js
index 5bfc8bbca8..705a646c82 100644
--- a/OutOfSchool/OutOfSchool.IdentityServer/wwwroot/js/site.js
+++ b/OutOfSchool/OutOfSchool.IdentityServer/wwwroot/js/site.js
@@ -11,13 +11,27 @@ let check_confirmPasswordEye = false;
 let password = document.getElementById('password');
 let repeatPassword = document.getElementById('repeat_password');
 
+if (sessionStorage.getItem("Button") && sessionStorage.getItem("Role")) {
+    btn_provider.className = "registration_type";
+    btn_parent.className = "registration_type";
+    btn_register.setAttribute("name", sessionStorage.getItem("Role"));
+    document.getElementById(sessionStorage.getItem("Button")).className = "registration_type registration_type-active";
+}
+
 if (password.className.includes('input-validation-error')) {
-    let elements = document.getElementsByClassName('registration_privacy');
+    let elements = document.getElementsByClassName('registration_privacy_password');
     for (let element of elements) {
         element.style.height = "65px";
     } 
 }
 
+if (repeatPassword.className.includes('input-validation-error')) {
+    let elements = document.getElementsByClassName('registration_privacy_confirm_password');
+    for (let element of elements) {
+        element.style.height = "65px";
+    }
+}
+
 if (document.getElementsByClassName('validation-summary-errors').length > 0) {
     document.getElementById("user_mail").className += ' input-validation-error';
 }
@@ -25,13 +39,17 @@ if (document.getElementsByClassName('validation-summary-errors').length > 0) {
 btn_parent.addEventListener('click', function () {
     btn_parent.className = "registration_type registration_type-active";
     btn_provider.className = "registration_type";
-    btn_register.setAttribute("name", "Parent"); 
+    btn_register.setAttribute("name", "Parent");
+    sessionStorage.setItem("Role", "Parent");
+    sessionStorage.setItem("Button", "btn_parent");
 })
 
 btn_provider.addEventListener('click', function () {
     btn_provider.className = "registration_type registration_type-active";
     btn_parent.className = "registration_type";
-    btn_register.setAttribute("name", "Provider"); 
+    btn_register.setAttribute("name", "Provider");
+    sessionStorage.setItem("Role", "Provider");
+    sessionStorage.setItem("Button", "btn_provider");
 })
 
 passwordEye.addEventListener('click', function () {
diff --git a/OutOfSchool/OutOfSchool.WebApi.Tests/Services/ProviderServiceTests.cs b/OutOfSchool/OutOfSchool.WebApi.Tests/Services/ProviderServiceTests.cs
index 17c01390ff..bc70c3c3b6 100644
--- a/OutOfSchool/OutOfSchool.WebApi.Tests/Services/ProviderServiceTests.cs
+++ b/OutOfSchool/OutOfSchool.WebApi.Tests/Services/ProviderServiceTests.cs
@@ -127,6 +127,59 @@ public async Task Create_WhenEntityIsValid_ReturnsCreatedEntity()
 
         [Test]
         [Order(2)]
+        public void Create_WhenUserIdExists_ReturnsArgumentException()
+        {
+            // Arrange
+            var expected = new Provider()
+            {
+                FullTitle = "Title",
+                ShortTitle = "ShortTitle",
+                Website = "Website",
+                Facebook = "Facebook",
+                Email = "user167@example.com",
+                Instagram = "Instagram1",
+                Description = "Description1",
+                DirectorBirthDay = new DateTime(1975, month: 10, 5),
+                EdrpouIpn = "55545000",
+                PhoneNumber = "1111111111",
+                Founder = "Founder",
+                Ownership = OwnershipType.Private,
+                Type = ProviderType.TOV,
+                Status = false,
+                LegalAddressId = 166,
+                ActualAddressId = 125,
+                UserId = "de909VV5-5eb7-4b7a-bda8-40a5bfda96a6",
+                LegalAddress = new Address
+                {
+                    Id = 166,
+                    Region = "Region166",
+                    District = "District166",
+                    City = "City166",
+                    Street = "Street166",
+                    BuildingNumber = "BuildingNumber166",
+                    Latitude = 0,
+                    Longitude = 0,
+                },
+                ActualAddress = new Address
+                {
+                    Id = 125,
+                    Region = "Region125",
+                    District = "District125",
+                    City = "City125",
+                    Street = "Street125",
+                    BuildingNumber = "BuildingNumber125",
+                    Latitude = 0,
+                    Longitude = 0,
+                },
+            };
+
+            // Act and Assert
+            Assert.ThrowsAsync<ArgumentException>(
+                async () => await service.Create(expected.ToModel()).ConfigureAwait(false));
+        }
+
+        [Test]
+        [Order(3)]
         public void Create_NotUniqueEntity_ReturnsArgumentException()
         {
             // Arrange
@@ -175,7 +228,7 @@ public void Create_NotUniqueEntity_ReturnsArgumentException()
         }
 
         [Test]
-        [Order(3)]
+        [Order(4)]
         public async Task GetAll_WhenCalled_ReturnsAllEntities()
         {
             // Arrange
@@ -189,7 +242,7 @@ public async Task GetAll_WhenCalled_ReturnsAllEntities()
         }
 
         [Test]
-        [Order(4)]
+        [Order(5)]
         [TestCase(1)]
         public async Task GetById_WhenIdIsValid_ReturnsEntity(long id)
         {
@@ -204,7 +257,7 @@ public async Task GetById_WhenIdIsValid_ReturnsEntity(long id)
         }
 
         [Test]
-        [Order(5)]
+        [Order(6)]
         [TestCase(10)]
         public void GetById_WhenIdIsInvalid_ThrowsArgumentOutOfRangeException(long id)
         {
@@ -214,7 +267,7 @@ public void GetById_WhenIdIsInvalid_ThrowsArgumentOutOfRangeException(long id)
         }
 
         [Test]
-        [Order(6)]
+        [Order(7)]
         public async Task Update_WhenEntityIsValid_UpdatesExistedEntity()
         {
             // Arrange
@@ -232,7 +285,7 @@ public async Task Update_WhenEntityIsValid_UpdatesExistedEntity()
         }
 
         [Test]
-        [Order(7)]
+        [Order(8)]
         public void Update_WhenEntityIsInvalid_ThrowsDbUpdateConcurrencyException()
         {
             // Arrange
@@ -247,7 +300,7 @@ public void Update_WhenEntityIsInvalid_ThrowsDbUpdateConcurrencyException()
         }
 
         [Test]
-        [Order(8)]
+        [Order(9)]
         [TestCase(1)]
         public async Task Delete_WhenIdIsValid_DeletesEntity(long id)
         {
@@ -263,7 +316,7 @@ public async Task Delete_WhenIdIsValid_DeletesEntity(long id)
         }
 
         [Test]
-        [Order(9)]
+        [Order(10)]
         [TestCase(10)]
         public void Delete_WhenIdIsInvalid_ThrowsArgumentNullException(long id)
         {
diff --git a/OutOfSchool/OutOfSchool.WebApi/Controllers/ParentController.cs b/OutOfSchool/OutOfSchool.WebApi/Controllers/ParentController.cs
index f1dcec9de8..c3502a48de 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Controllers/ParentController.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Controllers/ParentController.cs
@@ -70,7 +70,7 @@ public async Task<IActionResult> GetById(long id)
 
             return Ok(await service.GetById(id).ConfigureAwait(false));
         }
-
+     
         /// <summary>
         /// To create new Parent and add to the DB.
         /// </summary>
diff --git a/OutOfSchool/OutOfSchool.WebApi/Controllers/UserController.cs b/OutOfSchool/OutOfSchool.WebApi/Controllers/UserController.cs
index 15acb29e82..b330043d10 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Controllers/UserController.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Controllers/UserController.cs
@@ -3,6 +3,7 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using OutOfSchool.WebApi.Models;
 using OutOfSchool.WebApi.Services;
 
 namespace OutOfSchool.WebApi.Controllers
@@ -59,5 +60,27 @@ public async Task<IActionResult> GetUserById(string id)
                 return BadRequest(ex.Message);
             }                  
         }
+
+        /// <summary>
+        /// Update info about the User.
+        /// </summary>
+        /// <param name="dto">Entity to update.</param>
+        /// <returns>Updated Provider.</returns>
+        [Authorize(AuthenticationSchemes = "Bearer")]
+        [Authorize(Roles = "parent,provider,admin")]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status401Unauthorized)]
+        [ProducesResponseType(StatusCodes.Status400BadRequest)]
+        [ProducesResponseType(StatusCodes.Status500InternalServerError)]
+        [HttpPut]
+        public async Task<IActionResult> Update(UserDto dto)
+        {
+            if (!ModelState.IsValid)
+            {
+                return BadRequest(ModelState);
+            }
+
+            return Ok(await userService.Update(dto).ConfigureAwait(false));
+        }
     }
 }
diff --git a/OutOfSchool/OutOfSchool.WebApi/Models/ProviderDTO.cs b/OutOfSchool/OutOfSchool.WebApi/Models/ProviderDTO.cs
index 1c4e627b2d..64cc274cbf 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Models/ProviderDTO.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Models/ProviderDTO.cs
@@ -58,7 +58,7 @@ public class ProviderDto
         [DataType(DataType.PhoneNumber)]
         [RegularExpression(
             @"([\d]{10})",
-            ErrorMessage = "Phone number format is incorrect. Example: 380 50-123-45-67")]
+            ErrorMessage = "Phone number format is incorrect. Example: 0501234567")]
         [DisplayFormat(DataFormatString = "{0:+38 XXX-XXX-XX-XX}")]
         public string PhoneNumber { get; set; } = string.Empty;
 
diff --git a/OutOfSchool/OutOfSchool.WebApi/Models/UserDto.cs b/OutOfSchool/OutOfSchool.WebApi/Models/UserDto.cs
index b34041d607..3764002232 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Models/UserDto.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Models/UserDto.cs
@@ -19,5 +19,7 @@ public class UserDto : IdentityUser
         public string FirstName { get; set; }
 
         public string Role { get; set; }
+  
+        public bool IsRegistered { get; set; }
     }
 }
diff --git a/OutOfSchool/OutOfSchool.WebApi/Models/WorkshopDTO.cs b/OutOfSchool/OutOfSchool.WebApi/Models/WorkshopDTO.cs
index 3c01ad69f2..da5ff4309d 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Models/WorkshopDTO.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Models/WorkshopDTO.cs
@@ -17,8 +17,8 @@ public class WorkshopDTO
         [DataType(DataType.PhoneNumber)]
         [Required(ErrorMessage = "Phone number is required")]
         [RegularExpression(
-            @"([\d]{9})",
-            ErrorMessage = "Phone number format is incorrect. Example: 380 50-123-45-67")]
+            @"([\d]{10})",
+            ErrorMessage = "Phone number format is incorrect. Example: 0501234567")]
         [DisplayFormat(DataFormatString = "{0:+38 XXX-XXX-XX-XX}")]
         public string Phone { get; set; } = string.Empty;
 
@@ -36,11 +36,11 @@ public class WorkshopDTO
         public string Instagram { get; set; } = string.Empty;
 
         [Required(ErrorMessage = "Children's min age is required")]
-        [Range(0, 16, ErrorMessage = "Min age should be a number from 0 to 16")]
+        [Range(0, 18, ErrorMessage = "Min age should be a number from 0 to 18")]
         public int MinAge { get; set; }
 
         [Required(ErrorMessage = "Children's max age is required")]
-        [Range(0, 16, ErrorMessage = "Max age should be a number from 0 to 16")]
+        [Range(0, 18, ErrorMessage = "Max age should be a number from 0 to 18")]
         public int MaxAge { get; set; }
 
         [Required(ErrorMessage = "Specify how many times per week lessons will be held")]
diff --git a/OutOfSchool/OutOfSchool.WebApi/Resources/SharedResource.en.resx b/OutOfSchool/OutOfSchool.WebApi/Resources/SharedResource.en.resx
index fcab82b279..b92d85feb5 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Resources/SharedResource.en.resx
+++ b/OutOfSchool/OutOfSchool.WebApi/Resources/SharedResource.en.resx
@@ -137,4 +137,8 @@
     <value>There is already a provider with such a data</value>
     <comment>ProviderService</comment>
   </data>
+  <data name="You can not create more than one account." xml:space="preserve">
+    <value>You can not create more than one account.</value>
+    <comment>ProviderService</comment>
+  </data>
 </root>
\ No newline at end of file
diff --git a/OutOfSchool/OutOfSchool.WebApi/Resources/SharedResource.uk.resx b/OutOfSchool/OutOfSchool.WebApi/Resources/SharedResource.uk.resx
index c507fa0117..c22e264e50 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Resources/SharedResource.uk.resx
+++ b/OutOfSchool/OutOfSchool.WebApi/Resources/SharedResource.uk.resx
@@ -132,4 +132,7 @@
   <data name="There is already a provider with such a data." xml:space="preserve">
     <value>Вже існує провайдер із подібною інформацією.</value>
   </data>
+  <data name="You can not create more than one account." xml:space="preserve">
+    <value>Ви не можете створити більше одного облікового запису.</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/OutOfSchool/OutOfSchool.WebApi/Services/IParentService.cs b/OutOfSchool/OutOfSchool.WebApi/Services/IParentService.cs
index f3c81346de..4c09c9f6f6 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Services/IParentService.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Services/IParentService.cs
@@ -30,7 +30,7 @@ public interface IParentService
         /// <param name="id">Key in the table.</param>
         /// <returns>Parent object.</returns>
         Task<ParentDTO> GetById(long id);
-
+        
         /// <summary>
         /// To Update our object in DB.
         /// </summary>
diff --git a/OutOfSchool/OutOfSchool.WebApi/Services/IUserService.cs b/OutOfSchool/OutOfSchool.WebApi/Services/IUserService.cs
index 0ce36742d4..7a8fab39c3 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Services/IUserService.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Services/IUserService.cs
@@ -18,5 +18,12 @@ public interface IUserService
         /// <param name="id">Key in the table.</param>
         /// <returns>User.</returns>
         Task<UserDto> GetById(string id);
+
+        /// <summary>
+        /// Update entity.
+        /// </summary>
+        /// <param name="dto">User entity to add.</param>
+        /// <returns>A <see cref="Task{TResult}"/> representing the result of the asynchronous operation.</returns>
+        Task<UserDto> Update(UserDto dto);
     }
 }
diff --git a/OutOfSchool/OutOfSchool.WebApi/Services/ParentService.cs b/OutOfSchool/OutOfSchool.WebApi/Services/ParentService.cs
index 7d41ec602f..bdb1b6ee7b 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Services/ParentService.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Services/ParentService.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Linq.Expressions;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Localization;
@@ -119,6 +120,6 @@ public async Task<ParentDTO> Update(ParentDTO dto)
                 logger.Error($"Updating failed. Parent with Id = {dto?.Id} doesn't exist in the system.");
                 throw;
             }
-        }
+        }     
     }
 }
diff --git a/OutOfSchool/OutOfSchool.WebApi/Services/ProviderService.cs b/OutOfSchool/OutOfSchool.WebApi/Services/ProviderService.cs
index 312278700a..ec09f45882 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Services/ProviderService.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Services/ProviderService.cs
@@ -53,6 +53,11 @@ public async Task<ProviderDto> Create(ProviderDto dto)
                 throw new ArgumentException(localizer["There is already a provider with such a data."]);
             }
 
+            if (providerRepository.ExistsUserId(dto.UserId))
+            {
+                throw new ArgumentException(localizer["You can not create more than one account."]);
+            }
+
             Func<Task<Provider>> operation = async () => await providerRepository.Create(dto.ToDomain()).ConfigureAwait(false);
 
             var newProvider = await providerRepository.RunInTransaction(operation).ConfigureAwait(false);
diff --git a/OutOfSchool/OutOfSchool.WebApi/Services/UserService.cs b/OutOfSchool/OutOfSchool.WebApi/Services/UserService.cs
index 3f17e801e5..01a3657fc0 100644
--- a/OutOfSchool/OutOfSchool.WebApi/Services/UserService.cs
+++ b/OutOfSchool/OutOfSchool.WebApi/Services/UserService.cs
@@ -4,6 +4,7 @@
 using System.Linq;
 using System.Linq.Expressions;
 using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.Localization;
 using OutOfSchool.Services.Models;
 using OutOfSchool.Services.Repository;
@@ -65,5 +66,24 @@ public async Task<UserDto> GetById(string id)
 
             return users.FirstOrDefault().ToModel();
         }
+
+        public async Task<UserDto> Update(UserDto dto)
+        {
+            logger.Information($"Updating User with Id = {dto?.Id} started.");
+            
+            try
+            {
+                var user = await repository.Update(dto.ToDomain()).ConfigureAwait(false);
+
+                logger.Information($"User with Id = {user?.Id} updated succesfully.");
+
+                return user.ToModel();
+            }
+            catch (DbUpdateConcurrencyException)
+            {
+                logger.Error($"Updating failed. User with Id = {dto?.Id} doesn't exist in the system.");
+                throw;
+            }
+        }
     }
 }