I have an HTC one M8, and have had a premium subscription for a few months. This morning, I opened spotify for it to tell me it had no internet connection when I was connected to my 4G LTE connection. I restarted my phone and that did not solve my problem. I then uninstalled and reinstalled Spotify. I managed to get in but all of my music was gone. Giving me the option to browse. My playlists are still there, but not my music. I don't know what to do.