Thanks for dropping by the Community, Armadillo.
QuickBooks Online (QBO) currently doesn't support the PayAnywhere app integration. That said, I highly suggest contacting third-party app support again. Their developer can check and assist you further with the integration.
Alternatively, you can use our QuickBooks Payments card reader to easily get paid and run your business freely, whether you’re in-store, on-site, or on the go. To learn more about the different types of QuickBooks card readers and their features, please see these resources:
Please let me know if you have any other questions or concerns. I want to make sure everything is taken care of for you. I'll be here to help. Have a wonderful day!