Discover said the looping back around with no error message meant a wrong number was plugged in on the cc processors end. So I called ...and called...and called...and sure enough one of the many levels envolved between us the card company and usaepay had a mis-written merchant number for our account with discover. We had to fax them the letter from Discover Network to confirm it was the same number we had on file. Whew...now have to wait 24 hours for them to comply.