May 2018
June 2018
June 2018
Hi @FewDemitrius and thank you for the report.
Is it possible that the receiver of the donation had left the guild at the time you wanted to make the donation? That would explain why the request wasn't listed in chat, but still available in the guild donation section of the game.
April 2021
Had the same problem 4/18/2021 - with the exact same gear shown in pic. I think if you try to donate and another player finishes the request before you get to, it triggers the error message which returns you to the donation amount selector trapping you in a loop.