To help us better identify what may have gone wrong with the game, we will need some information.
1. Take a screenshot of your calendar as well as the trophy room.
2. Do you recall if you did something prior?
3. Did you exit the game by powering it off during the process of playing a game?
4. Did the device crash before it happened?
Any additional information you can provide would be helpful. Once you have this information, please feel free to submit a support ticket via the game.