Billing issues
I want to update my billing information address , and change my Country region , none of is not working
iPhone 12 Pro Max, iOS 16
if it was me then I would read
If you need to change or update your Apple ID payment method - Apple Support
and if you have problems then read
If your payment method has been declined in the App Store or iTunes Store – Apple Support (AU)
if your issue is that there is still money on the account that blocks you then you should contact apples support
And or