Problem with 4WD on Land Rover

Having a problem engaging 4 wheel drive on the truck. The first part of this video (YouTube) is some Brit demonstrating how this operation is normally done. The second part is me showing what I’ve tried. Total is less than two minutes.

Mr. Wolf informed me there was minor issue with releasing 4WD and I would have to pull the yellow knob back up to disengage 4WD. I’ve emailed him for clarification on this.