Help plz :)

Hey ive downloaded the mossyv9 ultimate edit and when im hosting online people are joining but they keep leaving everybody and the the enemies forfeighting arrives on the screen, and it just keeps say that Blabla left the game?

So, they join a modded lobby where you got cheats and they can't do anything but you wonder why they leave and want to force them to stay? *sigh*

of course they leave =.=
there is no fun if you get killed by hacks the whole time