I already published some apps without problems in the app store, but this time I really got a difficult reviewer. Already three rejections because of metadata and not enough detailed explanations of microphone uses I could solve. But now I don't know what to do...
It is an music learning app for clarinet, where the user get some infos and can play small melodies, while the app controls the right tune.
I think the problem was a download button for more content (videos, more melodies, ...). Starting the download you have to input a personal code, because I wanted to test with my students at first. So I gave them (the appstore testers) a code for testing, they asked from where the users get the code and if they have to pay for it. I answered, that by now it is only a test with my students. But the app is already useful without codes and content downloads.
Now the rejection with the answer: "Your app appears to be a pre-release, test, or trial version with a limited feature set."
How to publish apps with additional content that you can not handle via app store?
What would you advice? Should I remove this download button or hide it, so that it only appears after solving the free lessons (which the tester will not do without clarinet)?