This happened to me a couple of months ago and is happening again.  I connect to the wifi network at work.  "Offline" is not on.  I can't access anything except whatever I was last playing.  I can access the the list of musicians I follow but can't click through to their pages.  I tried restarting Spotify.  I tried restarting my phone.  I tried reinstalling Spotify.  Nothing works.  The app won't even work on LTE.  The app is completely unusuable now.