Kristine posted on Slack here that a UK donor reported that they were presented with the following message when attempting to donate:
"There is a problem with Wikipedia not complying with UK regulations with regard to credit card payments. I tried paying earlier last month and failed. You may wish to investigate and make needed adjustments to comply with UK Regs."
We've tracked the donation down, and it was a PayPal attempt. The Gravy transaction is here
The donor sent in a screenshot of the error:
