app store
Can't download apps due to "payment not complete" error. All payment information is correct on my account.
iPhone 13 Pro Max
If you get a message -> Your purchase could not be completed, you need to update your payment method or add a new one.
See the following Apple articles:
Payment methods you can use with your Apple ID
Payment methods you can use with your Apple ID – Apple Support (UK)
Add money to your Apple ID balance
Add money to your Apple Account balance – Apple Support (UK)