The e36 sunroof is the worst designed sunroof around. If you take a good look at the components and the way the roof slides and lifts, there is huge room for error. Everything from parts rubbing to hard or cheap plastic as one of the key component.
Overall. My sunroof is now fkd and I found it not worth it to fix.
As mentioned by other members, your switch is in back wards, i studied your video.
But as for the sunroof now working, no idea.