I quite enjoyed your game. The controls and mechanics of the game were quite intuitive (I only now read the directions and description, after already beating the game twice), and I really like the small detail of the balls having a graphic when they're actually stuck to a surface.
I can see how the glitching chains might frustrate players, and while I was able to get past that issue, you might want to set a hard limit to how far the links of the chains can be separated, alongside tweaking the chain physics a bit (so that, in the example of the spinning platforms at the end, the chain would be nearly parallel with said spinning platform while one ball is attached and the other is swinging around.)
As a side note, I imagine the speedruns of a full game like this would look amazing and ridiculous.