03-18-2013 08:41 AM
Someone had similar problem but did not post resolve.
Using Gravity Form + Authorize.net Plug-in
1. Test account set up. Green Checks (test mode selected in WP / on in test.authorize)
2. Created form with proper fields.
3. Set up feed (matched fields)
4. Test form using mock credit card (expiration date 12/2032). At this stage is when error message "There was an error processing your credit card. Please verify the information and try again" came up.