You need advertise to bring more players. I'm on it for 2 days and there are never more than 5 players on.
Might be the hours you play.
Most of the time when I log in there are more than 6 players for each free roll, so two tables are needed for each starting game.
Later of course they consolidate to one as players are eliminated
i play 15 hours daily and no more than 6 players. same all the time.