On the Amex, it's just a blank page that says: 3 6The credit card number is invalid.Click here to go backAnd when I go to check Authorize, it never even shows up as declined, so I don't think it's even getting that far.
That error is being returned by Authorize.Net"3" is their "Response Code" and it means error and "6 The credit card number is invalid" is their "Response Reason Code"You need to contact them.
Share and learn in the E-junkie community.