All of the clouds have been cleared on Orchid Island. Why is sunflower still showing as, "expansion..

Hello, I'm not an expert, but could it be that you need more stars? Because I know you unlock with the compasses, but you also need enough stars. Do you finish all the levels to the end, like get all 5 stars with the 5-Star pink box at the end, or do you only complete some of the stars for each level (unlock both clues, then move onto the next level)? If you're doing the latter a lot, it could be that you haven't unlocked enough stars.