it would be helpfull if you displayed the settings for all games in a more obvious manner, players dont like to go searching for game settings
that aside, perhaps it is the complex nature of the tournament? If this one dosnt work out for you, i would suggest perhaps trying out some more basic tournaments first, then revisiting this once you have some players used to your tournaments. Many players tend to shy away from complex tournaments when the organizer is not very well known. Good luck in filling this!