Puzzle

It’s unfortunate that the first level you publish has a free draggable (FD) that is so easily misused in ways the designer didn’t envisage. I think i can see how it is meant to be used but its hard to be sure as both stars can be captured without pushing the ball. There is a hint of a good idea here so make more but ditch the FD.

Spoiler: Presumed use of FD

to block the pushed ball until B arrives so B can cross before the ball drifts and falls.