To enable or disable notifications in the game, follow these steps:
iOS:
You'll be able to activate or deactivate notifications from both the device's and the game's settings.
In your device, go to Settings>Notifications and look for the Trivia Crack icon. There, enable or disable the option 'Allow notifications'.
In the game, go to Menu> Settings> Preferences, and enable or disable the Notifications.
Android:
Go to Menu>Settings>Preferences and turn Notifications on or off.