If you can’t find the iPod interface

Firstly, you need to make sure the app can get internet access(some VPNs block the access too), then you can open the settings under the Music Boy theme and wait for a few seconds. the app will ask the server for approval. if the device section does not appear. You can try to dismiss the setting and reopen it.

If it’s not working either, leave your email and I’ll invite you to the TestFlight version.