Keeps asking for login when no internet acces

[ogero]

I'm running Spotify on Android 5.0.1 on a Galaxy S4. 

The app shows the login screen when I open it after some hours without using it and no connection available. 

How is this app can't do something so simple as reading if I'm already logged in, and let me play my downloaded songs?
This is very frustrating! As it always happens when I have no Internet available, so Spotify music downloads are useless!

[ogero]

And now I can see that it doesn't even save the preferences of which playlist I want to be kept offline.

Btw, this is a clean installation, after having the same problems before.

[ogero]

It seemed to be working after uninstalling Spotify and formatting external sd. 

But... after downloading about 400 songs, my (brand new) 16GB Class 10 external sd got corrupted.

Walked through the full reinstall/format process and FAIL again, but this time, the external SD got BROKEN... way to go Spotify!
I would not recomend paying Spotify subscription to anyone, unless you enjoy backing up all your sdcard data betweens the Spotify app failures.