Welcome to the Pet Rescue Community
Do you need help with your game? Ask the Community for help.
It is frustrating not knowing where you are in the game/episode, plus missing out on rewards.
The end of level chest is being replaced by the 'chest quest' that rewards you according to how many stars you collect.
Unfortunately this is not working on facebook/computer and is still in the testing phase on mobile devices.
Once the game is fixed you will also have it to be rewarded.