Payment in the app store

And bingo:

Apple says if you see this message, "there might be a problem with the payment method that you have on file." Apple Support is the only one who can fix this for you. Speak with Apple Support by clicking on this direct link for this specific issue → https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362

Ref.: If you see a message that says "Your account has been disabled in the App Store and iTunes" - https://support.apple.com/HT208856

If you have a problem to ask about here it helps a lot to include any messages you see, otherwise we have to guess from multiple possibilities.

This document explains how to 'Change, add, [review,] or remove Apple ID payment methods' on an Apple mobile device, a Mac, or a PC; click here --> https://support.apple.com/HT201266

- If you are updating an old card and have ongoing subscriptions you may need to first add the new card and make it the primary payment method before deleting the old card.

'If you can't remove your last payment method or use no payment method with your Apple ID' click here --> https://support.apple.com/HT203905

If you still have problems Click here --> https://support.apple.com/choose-country-region/media-services Select your country, then a product. If you don't see one that handles your issue then keep experimenting with selections until you reach one that gets you a chat session or a telephone call and get the representative to redirect you.

or:

Contact Apple for support and service --> "See a list of Apple phone numbers around the world." - https://support.apple.com/HT201232

Additional resources:

'Payment methods that you can use with your Apple ID' --> https://support.apple.com/HT202631