Storage
How can I pay for storage as I changed credit card number?
iPhone 7, iOS 15
Question marked as
See -> If you need to change or update your Apple ID payment method
If you need to change or update your Apple ID payment method - Apple Support
See also -> Payment methods you can use with your Apple ID
Payment methods you can use with your Apple ID – Apple Support (UK)
fyi: Not all credit & debit cards seem to work with App Store / iTunes Store, try a different one, or preferably a credit card. If your card is not accepted as a paymenf method, you need to contact your bank.