Apple Fund Balancr

Some people have fixed this by signing out of the App Store/iTunes, restarting their device, and then logging back in. That hasn't worked for everyone.

Transactions can take up to 48 hours to process.

Be sure and see the support link given below.

Before you can add funds to your Apple ID, you must have a valid payment method on file. Learn about the payment methods that you can use with your Apple ID. See how to Add funds to your Apple ID https://support.apple.com/en-us/HT208687  Note that "after you authorize the payment, the funds ... [are credited] to your Apple ID. Then, you can use the credit to make purchases from the App Store or iTunes store. Need more help? Contact Apple support for help here: Get started