Or ... I have noticed that when you start the app you have a join "server" button. One would think that you could hit this and pick the server your game is on. What happens is it auto joins the server that it shows. To join a different game you are on you actually have to go through the entire log in process to get to the list of games.

Same thing when you are in a game. You have to logoff which will bring you to the main menu. The join button will have the last server you were in. To get to a different game you have to go through the whole login process.