Carbon Poker.. why no Omaha Hi/Lo cash games

Hello..Question please.. I cant understand why Carbon Poker does not allow Omaha hi/lo cash games.. They have Omaha hi/lo tournaments, Omaha hi/lo sit and go's but will not allow Omaha hi/lo cash games either pot limit or no limit. They do offer limit games which absolutely no one will play but thats it. I have submitted this question to them many times over the last few years, but they refuse to answer me. As successful as this game is in tournaments and sit and go's you would think they would allow it.