The problem was precisely the volume. Are a beginner may blame it on that. Thank you for the solution.
Now, I also wonder because I ordered Spotify Unlimited yesterday but regretted it and canceled. Was afraid I did something wrong. On my side I can still read I have ordered Unlimited. Did I Failed to cancel it?
Mine was too but it turned out for me that it was windows that was muting spotify, try right clicking the sound icon in the bottom right, open the volume mixer and boost up the slider, hope this helped :P