Not receiving any bonus for completing level in one try

Skskreed

I have completed  whole lot of levels in one try and have never received any bonus that the game states at the beginning of each level. Why does it state it if it is not going to give it?!? Frustrating! This has been happening for about 6 months! 

_Elsa_

Sorry for the delay in responding and I thank you for your patience.  I am wondering if you are expecting the free boosters to be added to your collection because that's not how these challenges work.  When the game requires you to complete a level on the first try, you do get the free boosters but they are loaded on to the next level.  So when you open the next level you will suddenly see those boosters randomly placed on your board.  So the next time you try these challenges please take note that if you cleared the level on the first try and you opened the next level - did you get the free reward?