Ok so I got my Mavic a few days ago. First up I cannot read the microscopic manuals that came with it, my eyesight is just not good enough. Luckily there are tutorial videos in the DJI app. Unfortunately I fail at the first step - registering the drone. I connect my iPhone to the controller via the little cable supplied, switch on the controller, switch on the drone, open the app and I'm supposed to get a registration screen but it doesn't appear. My controller does not connect to the drone but it reports its battery level so it must "see" it. What am I doing wrong?