I uploaded an extension that is still under review and tried to add my PayPal.me Contributions URL.
The form rejects it with this error:
URL domain must be one of the approved contribution domains.
PayPal.me appears to be on that approved list. I also tried variants with and without HTTPS and WWW, but all were rejected.
Is this a validation bug, or is there a specific PayPal contributions URL format that the form expects?