The problem with these smaller exchanges is that we never know what actually happened, especially with how the rookie operators can easily be tempted to take a run with people's money and blame it on hackers.
Not surprised at all by how they use default whois protection for their domain. Ultimately you could attempt to report that domain to Godaddy, but they likely used fake details to register their account.
Is anyone here able to open their main exchange site? It's not opening here at all unfortunately. It might turn out to be deleted as well, which would be a stab in the back for sure and a sign of their guilt.
