: Download GarageBand on that newer device to link the app to your account history.
If your device is running iOS 15.7 and you cannot find or download the app directly, use these methods: GarageBand requires iOS 17, my phone doesn't support it
Apple typically updates GarageBand to require the latest version of iOS or iPadOS. If you are running iOS 15.7, the App Store may tell you that the app is "Not Compatible" with your device. This happens because the current build is optimized for iOS 16 or 17. How to Download GarageBand on iOS 15.7