The Community in more languages
Now the forum welcomes more languages.
You'll see a green translate button in comments and discussions to turn them into English
Please follow these steps and let us know if that solves the issue > Clear cache and cookies from your device, then quit and restart the game (do not re-install) and play a normal game level.
It is also important to note that this could happen in case you have been playing offline for a while - In this case, make sure to connect to internet while you are performing the steps above and give some time for the packages to download. This should help and bring the event back.
Please post back and let me know how it went, so that we can be of further assistance if needed! Tap on "Type your Comment" box located below to reply back.
Talk to you soon! Have a great rest of the day/evening!