I cant use my gift card funds to buy things
I cant use my apple gift card funds
iPhone 8, iOS 15
Did you redeem the card?
This article explains the different kinds of gift cards Apple uses and has links on how to redeem them and what can be purchased with each kind. Click on the link --> What type of gift card do I have? - https://support.apple.com/HT204199
How apps, content, and subscriptions from Apple are billed - Apple Support
Some purchases aren’t charged to your Apple ID balance...