Oh no! If you previously linked your game to your Kongregate account, all you need to do is log back into your Kongregate account to restore all your progress.
Access the Kongregate login by clicking the More menu, followed by the Red K.
If this does not work or if you did not link your game to your Kongregate account, please Contact Support and they’ll do their best to help you get back up and running again. If you know your PlayFab ID or have any receipts, that should help speed up the process.