Welcome to the Candy Crush Saga Community
Do you have a question or need help with your game? Ask the Community.
Please note that the boosters are saved to your device and not the game data, so you can use them when offline too. This does mean that any updates, crashes or device changes can cause these items to be lost. For this reason, we do not recommend storing too many of the won boosters as these can indeed be lost unlike Gold Bars.
Please follow the steps on here to help you get your progress back.
If the troubleshooting doesn’t work, then please complete the contact form and they can manually add it back for you.
https://soporto.king.com/contact