How to Complete My In-App Purchase

There are many possibilities to cause this problem. Sometimes AppStore might not be able to tell whether you're using the paid version or the beta. A jailbroken device might also lead to the same problem.

Please try these steps and see if it helps:

1. Log out and login with your App Store account.

2. Close all the apps. 

3. Cut off the connection to computers or audio interfaces. 

4. Restart your iPhone/iPad. 

5. Launch JamUp and try to restore purchased again.

Or you can refer to this article provided by Apple:

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