With 2.15.1, we recently fixed an issue where players who had previously collected crumpets could get stuck in the loading screen with the duck after pressing "Play", and would shortly get kicked back to the main menu. 

This issue has now been fixed, so if you were affected by the above issue and had specifically collected crumpets in the past, make sure to update the app by visiting the App Store and you should now be able to play 😊