Being the clumsy fools we are, we uploaded the game in 16:10 when we designed it in 16:9. This cannot be changed until after the voting period, but for now just know one of the levels has a lever in the top right corner that you can't see. If you can't figure out why you can't finish a level, that's most likely why.
Here's a version of the game with the fixed 16:9 ratio. There is a list of fixes and proposed fixes in the description
notlivingpool.itch.io/3pq-edit-11
Please play this AFTER you've rated the uploaded version and/or consider the misstep in your rating.