I had the same problem bro i can help, go to safari (internet) on your phone and look up any spotify playlist could be from a certain artist or your favorite band doesn't matter. after i used the playlist link trick i still had problems but whenever it wouldnt let me in i'd just turn my phone off n on n it'd let me in, never had to repeat the playlist thing just make sure your always logged into fb on your phone n make sure u don't delete the spotify app too much like in the background apps, at least while its running it doesnt crash also try deleting all background apps (all currently running apps) then shutting off your phone, turn it back on n try getting into spotify. i typed in on google spotify playlists clicked on a random page n the first playlist i saw i clicked on, if its a real playlist on spotify it will try and open the app, it should say something is trying to open the app just say yes or allow if anything pops up, once your back by the log in screen log in with facebook and it should log u in and bring u to whatever link or playlist you tried to look at.