You can find your ongoing games on the home screen of the game. If you are in another section, you will be able to access the home screen by tapping the central icon of the bar at the bottom of the screen.
There you will find:
- The games that are waiting for your answer.
- Games that are waiting for your opponent's answer.
- The finished games. In these, you will have the possibility to rematch your opponent, by tapping "Rematch".