When you try to create a new playlist or update an existing playlist using JRemote for Android you always receive the error "add failed".
Using JRemote version 21.0.2 on two different phones (Android 6 and Android 7). MC 22.0.54 and now 22.0.55 on Windows 7 and Windows 10. JRemote authentication is set up correctly. JRemote for iOS on an old iPad can save and update playlists.