I find it amusing how all the current forums in the Monster Galaxy section are about the game not working. Just a little chortling.
Yes, the game is not working on Gaia, it was found out back in May. From what has been indicated, the staff are trying to find out from third party groups what's going on but nothing has been said in a while I believe.
The announcement for it is located here ---& click, so please go check there before posting more "I can't play" forums. c: