I'm using Authorize.net on Marketpress. I have setup the Login ID, Transaction ID, and MD5 Hash (I've done this previously with another cart without issue). On checkout I get the following error:
"Oops! An error occurred while processing your payment.
There was a problem finalizing your purchase. Please go back and try again."
I am wondering how to debug this issue so that I can resolve it.
I setup a $1 test transaction here:
I used a valid credit card when I received the error.
I looked in the backend to see if there is any error log for the cart but I couldn't find anything.