My map doesn't appear in download map folder!!!

[Gospel]

I created a map from scratch and decided to host it on bnet, but for some reason it doesn't appear in the download folder when you go to Create Game. I put it in the Test folder and it appears. So I hosted my game, but whenever someone downloads it they instantly leave the room. At first it seemed like they were just those leavers who download a game and then leave, BUT... they leave instantly after they download the game, and some of them return. I'm wondering if there is something i have to do in world editor to fix this problem, or something that I did and I'm not aware of. Please help me, because I'm stumped.