Your logo's just dead, from what it seems to me. That isn't too bad, in the theme setting, there's a setting for the URL of the logo.
Forum Closed:
Ok all you need to do to fix that is
ACP>Congiuration>Board Online/Offline>
It should be checked as Yes and just click No and it should switch your forum to open.
Okay, thanks. How do i install language packs?
I guessing you talking about MyBB, that's the layout lol.