For security and fraud prevention purposes, we verify your billing address with the address registered on your credit card. If the billing zip/postal code you provide does not match the one that is registered to your card then the transaction will be declined and you will be asked to resubmit your address.
If your billing address is different from your shipping address, then you can provide these separately in the checkout to make sure you don’t run into the above issue.
If you have entered a correct billing address and the system still rejects your order, then we recommend that you reach out to your bank/card Issuer, to make sure they have the up to date billing information for you.