I have used Kagi as an intermediary in paying Maintain for Cocktail. I never had a problem with them. I received the same email the pgGuy got, and the problem for Maintain and other developers is that they lost about two months of revenue which will never be paid to them. Also, customers who need to get a refund will have to use PayPal. I had not heard of the other two, but you can visit PayPro and eSellerate


Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365