Hi, I've a premium user account and an iPhone 6 64gb, in Spotify, in my music > song, i tick the "unavailable offline" switch, so all my songs should be downloaded and available offline. When I did that, Spotify start downloading all songs (about 5000) so I let it download over the night. When I wake up, the progress bar indicating the number downloaded and to still have to be download has disappear so everything should be downloaded but it's not, and when I had new songs, they are not added neither. I check my usage settings, I still have 10Gb available on my phone and Spotify is 15.4 Gb. I wonder why all the music are not downloaded. Is there a 15Gb limitation, or is it just a bug. I already tried to uninstall and reinstall, it,s the same.