Include full payment reminder on the "Pay with crypto" modal

[asnaith]

Problem: Currently, if a user makes a partial crypto payment, we won’t act on it and it will stay in the crypto account. This will be handled by refund/credit flow in future but as of now this is the situation.

V1 Solution:

• Add a reminder to the "Pay with crypto" modal informing the user that they must make a full payment when they are sending cyrpto

• Update the currency label underneath QR code to use ETH rather than ethereum

[Tbaut]

We should not add yet another warning (there's already one after #1924) I'm for changing the copy eventually for the "Only send the exact amount of ETH to this address"

[asnaith]

@Tbaut Sounds good, I was unaware of the other ticket. Perhaps all we need to discuss in planning is a copy change on this modal. Will keep it open for now.

[Tbaut]

Absolutely, I change adapting the copy that is already there, on your screenshot, would make the most sense. Because the other warning I just added is about reimbursement rather than the payment itself.

[FSM1]

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