Your MekaMon will not be paired with the MekaMon app when you first open it. Before you are able to play, your MekaMon must connect to your app. This is why, on first opening the app, game modes may be crossed out. For further information on connecting your MekaMon, please visit our page 'Connecting To Your MekaMon'.
If your MekaMon has previously been connected to your app, and you are still seeing your game modes crossed out, then you may need to reconnect your MekaMon robot.