Well I managed to make the first two connections, the real simple ones, and got to the bigger area where you have a bunch of options of where to go. I got that I needed to connect the white thingy to the grey thingy. I managed to make some more connections, but from there on, I didn't really know what I was doing. I didn't get how the source box worked, sometimes it flows to other boxes, sometimes not... Also sometimes boxes would stack on top of eachother, sometimes not, and in the last puzzle area it wasn't very intuitive how sometimes you'd push a box, and other times walk on top of it. The maximum connections I could make was 11
Anyways I don't actually think the mechanics were bad, they're probably really clever, maybe it's just a presentation problem, I think the best here would be to make really straightforward puzzles for each mechanic before throwing the player into a bunch of different puzzle options