Though it may remain unanswered, the question arises as to why the 13 BTC is untouched for this length of time. If this was an all-out exit scam things would have been far more obvious but they have not moved any funds. If I had to choose between exit scam or them being unable to access their server, I would come to the conclusion they no longer are able to access their server.

What happened to them going silent is very strange.