Hi dobsy!
Thank you for the feedback, really appreciate it! We are in the process of making clearer how to play the game.
When your hand turns green(pointing with the finger), you can touch the links and change the number of links.
Initial links are just to show which balls are connected(valid paths). We will make it clearer it actually doesn't count towards the count, so thank you on that!
Pinching(purple hand) will move the whole structure around. Keeping that in mind, and trying it again, do you still accidentally move it?
Thank you,
TETRAHASHI team