Thanks for playing! The laser issue is a problem that only exists in the web export version of the game, so I'll have to do some research to figure out what lighting changes to make for it to work right. Also, there is a button in the menu to reset the item positions so you can try again; there is also a shortcut mapped to f2 or gamepad left bumper to do that instantly. We're considering future changes that would make this feature more obvious and less necessary, because we'd prefer if nothing ever got permanently stuck.