Without a screenshot error or error reporting to post or send to Firefox no one reading this will know what is happening.

Thank you. I should have included more information. Attached is an example of the problem that does not involve a screen shot of a donation. Sometime the error was as shown: "There was an error processing your request..." A typical error for donations was "There was an internet problem with your request..."

Maybe you should contact your credit card company to find out what is the issue.

Thank you for your suggestion and your help.

To make sure that was not the case I used the same card in Chrome to give the same amount to the same non-profit, the same day. I also tried a different card to the same non-profit and got the same error message. I also had trouble getting responses in communication with web sites that don't involve credit cards, like the help desk at RideWithGPS in the attachment above.

Something appears to me to be interfering with internet communications for certain requests in Firefox.

This is a recent development. I did not have these issues until about 2 weeks ago. Before then I donated and got support without a problem.