I've never heard of the game before, but I gave it a quick search and the forum seems to be in maintenance mode, only accessible by the admins, mods, etc.
(Forum - http://wwww.hoovesofcourage.proboards.com/)
I could be very wrong but when a forum is put in maintenance mode it means that they've stopped production, from my experience. But as I said, I could be completely wrong, I'll have a more in-depth scout around and see if I can find some clear information on what's happened.
EDIT
I've found a tiny bit more information that sort of clears up what I've stated above, the deviantart group they seemed to have had is no longer available
(dA Group - https://hoovesofdestiny.deviantart.com/)