It seems that Logitech is not able to fix this or is waiting for spotify to fix this. I am one of those new german customers and are having the same problem. Which ruins Spotify Premium to me.
Many tracks/albums play flawlessly, but there is a large number of albums that don't seem to play at all. The interface shows them playing with the track time counting down but there's no sound! It's 100% consistent with certain tracks. For example, I can play "Jolene" by Dolly Parton and it works 100% of the time. But if I try to play "Seven Nation Army - Live" by The White Stripes there's never any sound. When I find a track with no sound, every other track on that album has no sound as well.
They all do play on my Android Smartphone and Notebook. This is not a region problem.