Hello, @sar81! This is actually the Candy Crush Saga section of the community. I'm going to tag @Jelly Jenny to move this to the Pet Rescue section of the community.
Could you first make sure you have the latest update installed so you have the newest version installed.
Then clear the cache and restart the app and see if that helps: -On iPhone simply swipe the app up and restart the device -On Android go Settings > Apps > Pet Rescue Saga > Clear cache and then tap Force Stop. Finally restart the device.