Spotify logging off itself

[tinderbox_solo]

Hi, I have problem with my Android Spotify app. When i have my Spotify app on sd card it after closing log off. That means that I open app, browsing songs, downloading some song, you know usuall using. But then when i close app it log my spotify account off. So i have to login again and with that comes that my song are not detcted as download but they are still in storage so i have to go to every single album, song, playlist and hit download button to make spotify to notice those files again. But then when i close app it log off again and again. I think that songs are shown as not-downloaded is normal thing that happens when you log off but i need help with fact that app is logging off my account itself. I already read bout this issue on community thread, tried reinstall app by oficiall tutorial, stop using chache cleaning apps, formated sd card, erase whole phone but nothing worked.

Phone: Lenovo A7000-a

Android: 6.0