Hmm, I wonder whether this is a problem with "Total Cookie Protection"? TCP limits how sites can use "third party" or "cross-site" cookies, meaning cookies from different websites than the one you see in the address bar. Using a payment service may involve passing data back and forth between different servers, possibly requiring third party cookies. To make an exception to TCP for a specific site, you can turn off tracking protection on the site. More info in the following articles: * [[Introducing Total Cookie Protection in Standard Mode]] * [[Total Cookie Protection and website breakage FAQ]] Any difference? P.S. If you aren't seeing the ReCAPTCHA challenge box/puzzle, one of your add-ons might be blocking it.

I really appreciate the guidance, thank you! I'll give it a try and circle back. Thank you again!