Payment address problem and unpaid bill

- Add a payment method to your account. See this article about payment methods that you can use with your Apple Account --> Payment methods that you can use with your Apple Account - Apple Support then see this article about how to add a payment method to your Apple Account --> Add a payment method to your Apple Account - Apple Support

- You can use the previous added payment type to go one step farther by optionally using it to irreversibly add funds to an Apple Account balance instead of having the card charged each time.

Click here --> Add money to your Apple Account balance - Apple Support

If no option is shown to "Add Money to Account" using this method (you only see using gift cards) then it may not be available in your country. Use a gift card instead.

- This article outlines how to redeem an Apple Gift Card or App Store & iTunes gift card --> Redeem your Apple Gift Card, App Store Card, or App Store & iTunes Gift Card - Apple Support

- You could also look into joining a Family Sharing group where the family Organizer's payment method is used. To learn how to join a Family Sharing group, read the section "Join a family group" in this support article --> How to set up Family Sharing on your iPhone, iPad, or Mac - Apple Support

Follow the steps in the support document linked below to add a new valid and verifiable payment method to your Apple Account.

click here ➜ Add a payment method to your Apple Account - Apple Support

and refer to the following support document to see which payment methods are supported in your country or region.

click here ➜ Payment methods that you can use with your Apple Account - Apple Support