Ok. Piecing together what you have stated. This is not a roll20 function problem but the social aspect and there is nothing roll20 can do about that. Getting accepted is something that the GM has to decide on who he wants in his game. The game saying no longer exist just means that the Creator of the game has deleted that game so it no longer exists, even if you have notifications or pm's. it just means he is probably ignoring your pm's. I was just asking for what the game is called aka "Blood moon", "Storm King's Thunder", etc... It is what can be looked for when using the search engine. The system is just asking for what type of game system is going to be used for the game aka "Pathfinder", "Savage Worlds", etc....