Does it say roof movement impaired on the screen? I had this problem regularly. It turned out to be a small plastic type tube sensor where the boot/roof pins lock into, when the boot opens up for the roof the pins come out of the tube and a metal clip should pop out inside the tube telling the car the boot has opened. When that clip didn't pop out the car things the boot is still closed. The clue for me was the roof wouldn't go up until I heard a click noise. This was the point when the clip finally popped back out, BMW replaced this sensor (finally after many visits and me actually ending up finding the fault), never did it again after that
