Spotify Premium stopped working

[Bigbane91]

Spotify premium worked a few days after i subscribed but the app on the phone has stopped recognising my premium subscription ever since. Reinstalling and loggin out and in doesn't work. Premium works on the desktop app and the spotify website says i am under a premium subscription. 

[tzmonstel]

same with my account desktop and homepage say i am under sub but on the app it does not work. On the other hand my the account from my brother works fine .____.