Because the incompetent "Developer" with a lack of knowledge on java, couldn't create new features by his own. He pretty much used this pack from Synerge (real developer) and He edited the html adding Mythras logo and new NPCs, but He still using the the same features from L2AVA server (old server from MOUSE).
Beside the GMs staff, they were very good inGame, they tried to keep alive the community, but the screw up working with the same "Developer" if i can call this guy like that, I would rather say "The Editor" instead.
So in conclusion, making servers with old files from others servers and using exactly the same features, for sure it wont work out again.