Engadget
Common problems with Apple Wallet and how to fix them

Apple Wallet issues often stem from expired or reissued cards; removing and re-adding the card in the Wallet app usually resolves payment failures. Ensure iOS is up to date, the device’s region and Face ID/Touch ID settings are correct, and verify Apple Pay support for your bank. If problems persist, restart the iPhone or check Apple’s System Status page for service outages.