Thanks! and about placing the planks, the first item (circle one) doesn't have physics so it doesn't fall down but you cannot step on it that's why you have to use it for holding the plank! so, after placing the circle tile you need to place the plank on top of it carefully, but make sure it doesn't slide and fall off! If that's not the issue maybe your inventory is empty lol, you have limited items to place like in the first level you can only place 1 plank and a circle...