Welcome to the Candy Crush Saga Community
Do you have a question or need help with your game? Ask the Community.
Hi there. These special candies can only be used on some levels, as a pre level boosters. Coconut wheels are usually available to use in dragon levels. Lucky candy boosters are usually available for use for levels that require an order. Be wary of using these if the order is for a blocker though, as it may hamper you if blockers appear on a board early on. Above are some screenshots for levels were you could use these booster.
Do you mean pre game boosters when you write "inventory"? These are my choices for these levels. I notice that they do not include the coconut wheel. Are your options different? I am not quite sure what it is you are asking.
Please also note that I am just another player like you so can't change anything in the game. If you are not happy with the game then you will need contact player support. You could post a question over in the Support forum where you will get an answer from a moderator, or use the "contact us" option at the bottom of this page.