Thank you for using Apple Support Communities.
For more information, take a look at:
How to report an issue with your iTunes Store, App Store, Mac App Store, or iBooks Store purchase
GarageBand for iOS 2.0: Restoring purchased instruments and sounds
iOS: An app you installed unexpectedly quits, stops responding, or won’t open
- Find the app in the App Store.
- Tap the app and tap Reviews.
- Tap App Support.
Have a nice day,