coupon causing checkout failure
I have a challenge with any coupons i build and try to let client's use. I have tried adding the product as a single add to coupon, the "add all" method and even just on a single product and i just can not get the transaction to complete. the user is sent to papal - express guest or account log in, enters info and then is returned to my store with a "transaction not completed" error. Please help.
See code in attach