Level 9126 was a difficult level to solve, but the solution is actually quite simple!
⭐️In order to make the pinwheel blocks 𖣘 appear you need to have at least eight diamond blocks 💎on your board! ⭐️
It's hard to do, but try to carefully get a diamond in each column until the pinwheel block appears. If you're lucky you can get all three pinwheels in a row, otherwise get more diamonds on the board to make it happen again.
The example is below, I hope it helps? Good luck!