Well, how often to you log into feralheart? I think there was an issue where the game would delete your account or something, but I also believe there is a certain glitch going around. This is not the first help thread I have seen for this sort of thing, so it might be an issue just waiting to be fixed.
I would recommend PMing an admin or mod about this issue, and also clicking the "forgot my password and forgot my username" right under the "log in" place in the top right corner of the forums.
Hopefully some of that helps!