Star Trek Adventures
Just looked over your game.
If it took six months to start the first adventure, that's probably why you lost players. It's hard enough to keep interest in a PbP game with frequent posting.
In any case, you might want to put up a thread for your Posting Rules... how often you expect a post (1 per 2 days in norm), whether you want color for dialogue, how you want comm messages to be indicated, how you want telepathy/thoughts to be indicated, etc.