Hello, I’m update A card which one was declined, now is positive balance, but it still a problem to update this card can you help me?I have only this card.

Hello Oledjan1986,

Welcome to Apple Support Communities!

If we understand your post correctly, your card was declined when you tried to make a purchase but now your account is positive but you're unable to update the card payment. We're happy to help!

We see that you came from the article If your payment method is declined in the App Store or iTunes Store, did the steps provided in this article not work?

To change your payment method you can follow the steps in this article: Change or remove your Apple ID payment information - Apple Support

If you're still having issues we recommend contacting Apple Support directly.

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Take care!