Had this issue before, can connect after a few attempt, but no camera view, take photo also nothing registered.
Almost send back the drone for warranty, luckily found out it's my corrupted stock microSD card the culprit!
You still can read & write to the card from PC, it just won't save the photos on the drone

changed to a new card and everything it's working perfectly.



IMO, last few rules are stupid
30m radius take off? really?
50m radius from any building? that's another stupid rules

if flying a RC heli, probably, but a highly accurate drones like DJI is plain stupid

sounds like this sets of rules are written by someone that knows nothing about current state of drones.