Make sure you are connected to Game Center | Play Store before uninstalling the game.
- Ads need to be downloaded first in order to be seen. Buttons will be greyed out if the download speed is not enough.
Can you start the game with Wi-Fi and check if it's solved?
- If 1. failed, please uninstall the game, turn OFF your device (very important) and reinstall.
- Clear the ads cache.
💡Android: Settings -> Apps -> Crush Them All -> Clear caché.
- If all the steps above failed, you can try a more drastic measure and reset the ads ID.
💡Android: Settings -> Google -> Ads -> Reset advertising ID -> Restart device.
💡iOS: Settings -> Privacy -> Advertising > tap on "Reset Advertising Identifier" and confirm the ID reset.