I don't really know how to describe this, or is it a problem. I've just created Spotify account like couple days ago. I opened it today and in the right upper corner of Spotify app, next to my picture I see this --> 21ltfcogdrlpcmjtd7gwu6d7a and I quite am sure it was my name there before.
Does someone know what happened? Everything works normally, it just looks...weird.