Hello. Hmmm. Not sure what that could be.
I recommend closing the application fully on your phone, not just switching applications, to ensure the game gets reset.
To close on Apple iPhone:
https://support.apple.com/en-us/HT201330
To close on Android:
https://www.androidauthority.com/how-to-close-apps-on-android-1192387/
Hope that helps, and have fun