I'm still pretty new to roll20 (as in I've only had two games continuous games before) and I was planning on joining a third campaign on Saturday. However the day before we started our game, the DM went silent and we haven't heard from him since. Now, it has been roughly six days since we've heard from him and one of our members notices that our game is now gone on roll20. Strangely enough. All of our sheets and everything, gone with the wind. My question is, do games close on their own or can only the DM and the DM only close the game?