Please note that donations are processed entirely manually - by volunteers at the Amiga Club Hamburg, which has been operating the bounty system for the last decade.
The old bounty website does not have the required functionality to update the website automatically.
I am afraid there is no guarantee that your payment will show up within a specific time frame. I realize that this is not what you would like to hear. I fully understand. If you are unhappy with this, feel free to ask for a refund and perhaps consider donating to developers directly.