This seems to be happening with those who are playing the game on the old version which is Flash related. Candy Crush Saga on king.com is the old version. The new version is HTML5, however, even if you are playing the game through Facebook your game might still be on the old version. You can read more about the HTML5 version here: https://community.king.com/en/blog/discussion/246625/is-your-browser-ready-for-html5#latest
Even if you are playing the game through Facebook on any of the browsers, you might still be playing on the old Flash version. If you play through Chrome or Firefox, In order to get updated on the new version, please follow the steps on this link: https://community.king.com/en/blog/discussion/247839/did-you-game-switch-to-the-old-flash-version.
If you are playing the game in Facebook with Internet Explorer you will have to try another browser because this browser supports Flash. If you are playing on a mobile device it shouldn't affect your game, nor should it affect the game on Windows 10 with a computer.
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