Logged out and set Offline Playlist to not available

[Supergrobi1909]

Hi all,

Yesterday in the evening, I've listened ro my Offline-Albums (fully marked as green/offline). Over Night, my Iphone 5 was completely switched off. This morning, after starting the phone, my Spotify-Account was logged off (username and PW required) and all my offline-contents are no longer available (grey/ no offline-green). 

Is any one aware of the reason? 

[ToolboxT]

Might just be a one time bug that wont happen again.