Not able to reconnect and constantly disconnecting [CRASH]

This has been happening for quite awhile and my internet works for every other game but it seems like this bug has been happening when trying to reconnect to a game is says unable to have a connection when my internet is just fine and it has just lost me a game because of not letting me back in. I started another one because my internet is fine just launched up another online game and it works with no lag now it wont even let me connect to the game.