As Shurtle said, the staff team have done a great job on the issue. If you have trouble logging in in-game after our advice to you, then maybe contact a staff for help, unless you've already done that. There's really no reason to complain, as the staff have done a fantastic job getting the game playable for the community again, especially Razmirz, and without them, FH wouldn't be alive. I understand you are unable to access the game at the moment, but really, you should be thanking them for their work.
Kovu isn't coming back, as Shurtle stated, so there's nothing that can be done, that needs to be taken into recognition. Sure, it's unfortunate but he has been gone for a while, so no use complaining.
As for the hacker situation, the staff keep whatever is found out to themselves, as the problem with the game is fixed. There's really no need for the commotion over the staff and such. But if you can't fix the problem, contact a staffer.