Same problem for me in Firefox and Chrome. I have to constantly refresh the page to get a song or playlist to even play. Also, I noticed the shuffle and repeat buttons are not responding well when clicked. Please fix this issue, Spotify! I don't want to have to drain my phone's battery at work just to listen to my music.
I have the same exact problem and I contacted support but, they said there was nothing wrong with the web player. Now, I can't listen to music while doing my work. The whole setup of this new webpage is awful.
Happening here as well. Initially, it was displaying the last song I was playing on my Samsung tablet. I could play that song, but none else. I closed that and restarted the web player. It didn't show that I was connected to the Samsung tablet, but still wouldn't allow song to start. I downloaded/installed the app and was able to start a new song. When I closed the app and returned to the web player, it didn't work again. It only showed the song I started on the app.