I’m been told to visit this site for my card verification anytime I try to fix it in my account
how do I verify my payment method
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Did you check, if all information for your payment method is correct?
If you need to change or update your Apple ID payment method - Apple Support
Also have look at this article:
If your payment method is declined in the App Store or iTunes Store - Apple Support
If this does not work, use this link as a start, to contact the official Apple Support. Only they can look into your personal data, to find the issue: