My opponent has not made his first move yet. How do I cancel the game.? Thanks
Just let it time out. That is assuming your opponent isn't just taking some time going over all your old games first and is going to make a move before time runs out.
Or you could resign. It shouldn't count as a rating loss (for either player, depending on the route you take) since not enough moves have been played.
My opponent has not made his first move yet. How do I cancel the game.? Thanks