Help again this time!

[Tayaga334]

E: The repository 'https://dl.bintray.com/grimler/game-packages-24 games Release' does not have a Release file.
N: Metadata integrity can't be verified, repository is disabled now.
N: Possible cause: repository is under maintenance or down (wrong sources.list URL?).
E: The repository 'https://dl.bintray.com/grimler/science-packages-24 science Release' does not have a Release file.
N: Metadata integrity can't be verified, repository is disabled now.
N: Possible cause: repository is under maintenance or down (wrong sources.list URL?).

[ghost]

See #6726 for instructions how to fix that.

[Tayaga334]

See #6726 for instructions how to fix that.

“Ign:1 https://dl.bintray.com/grimler/game-packages-24 games InRelease Err:2 https://dl.bintray.com/grimler/game-packages-24 games Release 403 Forbidden
Get:3 https://grimler.se/termux-packages-24 stable InRelease [13.1 kB]
Get:4 https://grimler.se/science-packages-24 science InRelease [13.3 kB] Get:5 https://grimler.se/termux-packages-24 stable/main all Packages [22.6 kB] Get:6 https://grimler.se/termux-packages-24 stable/main arm Packages [276 kB] Get:7 https://grimler.se/science-packages-24 science/stable all Packages [20.4 kB]
Get:8 https://grimler.se/science-packages-24 science/stable arm Packages [28.7 kB]
Reading package lists... Done
E: The repository 'https://dl.bintray.com/grimler/game-packages-24 games Release' does not have a Release file.
N: Metadata integrity can't be verified, repository is disabled now.
N: Possible cause: repository is under maintenance or down (wrong sources.list URL?).”

• I still have that error
  

[ghost]

Then you doing something wrong. You need to change all repositories, not the main one only. Do exactly as on this video:

screen-20210427-154621.2.mp4

And use app from F-Droid, not Google Play.