The screws that secure the mount to stop it turning the angle, are small and poor quality and the head cross threads so easy. Also, the biggest issue is the nut on the inside to secure to this screw does not line up with the pre drilled holes. So it’s impossible to even secure it together without messing up your screws.
I managed to get it together but then only just about got it off the wall as the screw heads had enough.
You can’t take it off the wall without removing these screws removed so you risk having it permantely stuck on the wall