Continuously being ask to verify my billing address
Why I can’t download anything from apple store? I am continuously being asked to verify my billing information
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Have you done as requested?
The resolution to this issue is often making sure you have entered a credit card or other valid method of payment even if you don't plan on needing to use it.
If there is an option to select "Review" or "Continue", select that and enter valid payment information if required. If there's problems doing this:
Tap: Settings > [your name at the top] > Media & Purchases > View Account > Review Apple ID.
More things to try in this 2018 post by Urquhart1244 marked Apple Recommended:
https://discussions.apple.com/thread/8434425?answerId=33542414022#33542414022
Payment methods that you can use with your Apple ID - https://support.apple.com/HT202631