Btw the pre-game booster also grey in color. This is what I founded in this community again have screenshot same problem like mine. https://community.king.com/en/candy-crush-saga/discussion/250049/pre-game-boosters-locked
@Cezdiamond yes, I have search in this community for same case, yet the other support question raised by other player still remain unsolved. https://community.king.com/en/candy-crush-soda-saga/discussion/231904/why-are-my-boosters-all-locked