Welcome to the Candy Crush Saga Community
Do you have a question or need help with your game? Ask the Community.
Try to restart your phone, and if this don’t work try to reinstall the game.
Hi and Welcome to the King Community
To update your game application you need to go to your app store. There you will find your game icon. Besides it will mention that update. Just click it and it will update automatically. also please check this page
For the most part, app updates are automatic and don't require you to do anything. Are you sure your game isn't already up to date?