What do I say when they ask me why they are now stuck in a 30 day move backgammon tournament which when they signed up says that it was a prize tournament that WAS NOT going to start until 200 people signed up - but is now not a prize tournament, no idication it every was (since name & description is gone), and now they are not allowed to enter any other tournaments.

Yes, the tournament creator can do this.... but should they be allowed to? That is the real question.