Signing up for a new season is either busted or needlessly convoluted

I'm on a novice difficulty Manibus server and the has season reached the settlement phase. So the server's promoting signing up for a new season. I'd like to do normal difficulty Manibus next, but the game's only offering me two Manibus servers, one Hard and one Normal, with the Normal one being full.

I'm not going to do the Hard one because of increased food consumption and other annoying changes it apparently has, so am I just supposed to not play the game at all? Or am I missing something about the sign up process? Does the game really have this few servers?