Second, like I said in your help you should disable BLG, doesn't matter if you need it or not, it could be your problem but you aren't even trying. We can't help you any further if you do not try an option we recommend, if I am wrong about BLG being a problem then we will try the next step.
You should at least disable/remove BLG and see if it loads for you instead of assuming it does not.
You can't just assume it's not the problem until you disable/remove it. I recommend removing it completely because if you have preload it will load it regardless if it is enabled or not.
I am not hating on BLG but people have said that RTB was fine until they crashed when they hosted a non-dedicated server.
More editing:
I also see that your events are not loading, disabling BLG on my server also prevented this from happening and it only affects users using BLG. I'll make a video and replicate the problem so I'm not crazy and hating on BLG.
So I found the problem and it seems when you enable an add-on that has RTB prefs (like my autosaver) while having BLG, that's when the loading breaks.
GameConnection::onConnectRequest is involved in this for Glass stuff which is called right when you connect.
Video:
https://drive.google.com/file/d/0B7GxvN-ySa6JZ3B5ZGZwVEpBWnM/view?usp=sharing