I used all my boosters to beat the secret cave

CamilleBrown1988

Used all my booster to beat the secret cave...played for hours ....finally reached the third tier and got the sugar drop and striped and sugar drop and wrapped yet it didn't show when I put them together....I finally beat the level and it didn't show when I swiped the last sugar drop and striped together....

KingsPinn

Have a read of this thread. It's relevant to your post: 

https://care.king.com/en/candy-crush-saga/i-passed-the-level-but-the-game-didnt-recognise-it