It looks like Havelock has stopped working completely. You can login (although the process is incredibly slow), but attempting to do anything on the site, withdrawals, trades, anything gives a 502 Bad Gateway error. It's been this way for a couple weeks now, so it seems that it's not just a temporary issue and they may have either given up on maintenance or gone full scam.
Maybe you should check here about the current status of it.
https://bitcointalk.org/index.php?topic=326666As it seems, they working on it and i hope that they will recover stronger and better...