Hello @BBB3, Hearty Welcome to our friendly King Community
I am very sorry to hear that you have lost your boosters just by updating the game!!
I am hoping that when you said "update", -- it is just installing the latest version BUT NOT installing the entire App!! Please clarify!
Also, can you please tell me which game you are having this issue? I would like to make sure about it as some players are posting about it in other Candy games too!!
Please let me know by posting back. If you tap on "Type your Comment" box located below, you will be able to write back.
Talk to you soon! Have a great rest of the day/evening!