Update Apple ID settings

If you're absolutely sure you provided all the correct info in Settings>[your name]... (update your contact information, Password & Security, update your payment methods or billing address, view and manage your subscriptions), try to sign out of your Apple ID, restart your iPhone, then sign back in to your Apple ID.

If the issue persists, contact Apple Support using this link:--> Contact Apple for help with Apple ID account security - Apple Support

Regards

Giulio

Yes, it might be that (probably expired) credit card.

Contact Apple, as suggested in my previous reply, and they will help you.

Regards

Giulio

You are welcome