Well, it's not for sure, but I certainly can't keep up with all the reffings at the moment. I'm trying to get in my 30-60 minute drawing time everyday, and by the time that's done and dusted I'm tired and just can't summon the energy to write up a round for all the waiting battles...
Yeah, the League Challenge might shut temporarily until we can get enough referees. For now, I'll say, an easier option is The Disappearance.