payments

In addition to Mac Jim ID’s excellent answer, you can pay your account online at card.apple.com, once you login with your Apple ID and password. Please follow the link below to learn how to pay online with your account number and bank routing number. The transfer of funds is via ACH and you may have to wait 14 days or even more before Available Credit is updated.

Pay your Apple Card balance online - Apple Support

Review this support article about making payments on your Apple Card. There is a section that tells you to contact Apple if your device is unavailable. You can follow that link:

How to make Apple Card payments - Apple Support