Weird! Completely no events or features!

Hello @NamTruong2001 and @weronika

Have you tried to log out of the game via your profile? Check for game and device updates. Clear cache, power off your device for at least 1 minute, restart the device and log back into the game. Make sure you have at least 2GB free memory storage to run the game smoothly.

Note: it may take a few times of logging out via profile and back in to your profile. Hope this works!

If you have saved your game through King account or Facebook account you should find your progress and boosters back. Do understand I am not saying you have to uninstall and reinstall the game app! If you do that, you'll definetily lose your boosters as they are stored in your device's memory! Uninstall and reinstall is always the very last resolution!