When the Add Credit Card button is pressed the loader quickly spins and the card information stays in place. It may look like the card wasn't accepted but it is added to the order even when the Add Credit Card button is still visible. We know this is confusing, and are working to resolve the process! Please see screenshot below for reference.
If you received a credit card error after pressing Place Order, please review your billing address. The billing address must match the address tied to the credit card.