Cannot take down hosted experience server

I cannot take down my hosted experience either from the menu or from within the server itself. In fact, I cannot even kick or properly ban people on the server. Every time I try any of the above it takes a few seconds before I get an error message (something like undefined error). I can broadcast a message I guess but asking people to leave the server isn't working if they have chat disabled lol.

Dice plz with your online servers!