For the past few days, I've been trying to sync my playlists so they can be available offline and for some reason their not properly syncing. I On my iPhone, I keep closing out of the app and re-opening. It will saying 'connecting' and then the sync bar will come up and say 'syncing 1 out of 112' but then it will just stop. I went to the last song that it synced on a playlist and the song has a ! symbol as opposed to the green download arrow symbol. Any suggestions on how to handle this?