The WebGL build doesn't work properly, my mouse gets out of the window so I can only have like 30 degrees of rotation. The executable works pretty good, surprised that it supports ultrawide aspect ratio.
The controls/movement feels a bit janky, are you using physics based movement?
Spring pad is hard to use, I suggest using a "jump zone" where it doesn't actively launch player into the air, instead it makes player jumps higher, so the player gets more control on it.
The plain color background is hard to look at, and doesn't provide much visual feedback on the movement, largely because the room is so empty, and the lighting setup enhanced it. Perhaps some texture on the wall would help.
The levels, although some are a bit too obvious as a "puzzle", some are quite interesting and fun to figure out. I do understand that this is a game jam, and people pretty much just give up if it's too hard, so it makes sense that you choose to babysit players on the earlier levels.
The conveyer belts and platforms on top of the room, I feel that they are too high for player to see what's on it. I suggest you to lower it so that player still cannot reach it, but can see more of it.
Pretty polished UI and settings, few games on the jam get them to this much details.