Can't disconnect Last.fm from Spotify

[Sha_man]

Hello!

I'm having some troubles with my Spotify on Android. I have deleted my profile from Last.fm which I had connected with my Spotify account. Now everytime when I either open the Spotify app or just restart my phone I get a notification from the Spotify app which says I have inserted wrong last.fm username or password. 

I have turned last.fm sync OFF from my settings, but everytime I restart the app it automatically switches the setting back to ON. I have tried reinstalling the app and downloading all the latest updates, but nothing seems to work. Is anyone else dealing with the same problem? Any help would be greatly appriciated!

[Daniel]

Usually a clean install is the first step to take and resolves most of the usual issues; the guide details the steps to take to ensure a full 'clean installation' is achieved - This includes checking redundant folders and a REBOOT!

[COMPLETE GUIDE] How to fix most Android issues