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Firstly I would read over this thread:
https://care.king.com/en/candy-crush-saga/i-passed-the-level-but-the-game-didnt-recognise-it
Then to stop it from happening again, I would follow the steps here:
https://care.king.com/en/candy-crush-saga/cant-get-your-games-to-load-on-facebook-check-this-out
I hope this helps!