Why is "Do Not Honor" displayed after checkout/payment?
A "Do Not Honor" message from banks means that your transaction was declined by the bank that issued your card.

We recommend you to call the number on the back of your card and talk to a customer representative of your bank. Please explain to them that you are trying to place an order online and request them to allow the transaction. If they can't help you, you can try to use an alternate method of payment such as PayPal (you can try your card again using PayPal), or simply using a different credit card.