Welcome to the Pet Rescue Community
Do you need help with your game? Ask the Community for help.
If your app is closing then try out a few of these troubleshooting steps in the videos here, highly recommended!
https://care.king.com/en/candy-crush-saga/lost-your-connection-to-facebook-ios
https://care.king.com/en/candy-crush-saga/lost-your-connection-to-facebook-android