So, this issue is being ignored completely? In the meantime my payed account expired and I use free mode. Good thing I didn't pay - the issue just occurs again right now. I play my playlist and all of a sudden some hip hop songs start playing (I can see that "Web Player (Chrome) - Spotify Connect" is connected, which isn't me. Guess this controls the songs I'm listening to.
How do you explain it after everything that I've done to create a new password/2FA, etc.?