We've been using DTReg for several years now. Within the last week or two though we have had complaints that users were getting the "The transaction has been declined because of an AVS mismatch. The address provided does not match billing address of card holder." error when trying to pay with a school credit card. What do I need to do in the form, etc. to fix this? When the credit card page pops up it doesn't ask for their billing address, etc. All we have ever asked for on the signup form is their home address. Do I need to add special fields for this?