I have a customer who has been trying to order from me for 3 days now. He's attempted 5 orders and none of them go through (I am having other successful orders). He is trying to pay via credit card.
He said the error he is getting on his end says: "number of orders does not sync"
This is exactly what it says in my error log.
Code:
Error: Transaction refused because of an invalid argument. See additional error messages for details. (The totals of the cart item amounts do not match order amounts.)
He is paying with a VISA. I am using X-Payments: PayPal Payments Pro
Any ideas what this error message means? I've been running this store for 3 years and never had this one.