I just made a Monstercat Radio to see what's up and I think know what the problem is. For some reason Spotify Radio doesn't seem to pay attention to spaces or periods on artist's name. Like AJR is sometimes A.J.R. or Timeflies is Time Flies. Apparently there is a band called MONSTER CAT, and their the people that are coming up on your station. So to get around that, I would suggest you make a radio station about a different EDM producer.