Not sure if anyone has had this issue...but I'm in the military and go out on a ship for a long time. Last time I downloaded a bunch of offline songs, CRITICAL to remaining sane while on the ocean for a while. But on the first of the month (like May 1st) all the songs undownloaded...maybe because Spotify could not recognize I was paying for premium since there's no internet in the middle of the ocean?? Anyone have any clue if this is a thing that Spotify must be able to verify that you pay premium. Obviously I don't want to pay 10 bucks a month if my songs will all undownload on the first of the month. Any help would be greatly appreciated!!