Nah, I think you're meant to use it on the, "Walk straight, over to the fence" page instead.
But this page specifically mentions my short dog legs. XD
It don't matter. It implies you can't use one of the required items to open the door without the other. Speaking of which, what exactly do you have to do after that?
You need to rework it so the End Link actually works, it needs Unpublished and fixed.
Just fixed it. Sorry about that.