I'm using the Authorize.net add-on for my client's website on two pages.
https://www.rccaconcerts.org/donate-now/
https://www.rccaconcerts.org/season-membership/
SSL is all set and the API Login ID and Transaction Key give me the green checkmarks. But whenever I try to submit a transaction I get, "There was an error processing your credit card. Please verify the information and try again." in the credit card field. I set up a test form, thinking maybe it was my form, but get the same error on my test form. I've tried test credit card numbers and get the same error. I contacted AuthNet's chat support. They say it's not hitting Authorize.net. Suggestions?