I don’t have anything else to offer at this time, my first thought was that the ball joint was out of position but looking at the photos the ball joint seems to be OK. If you do try too remove the ball joint and you find the screw is seized or the nut is loose on the other side then to remove it you can drill the head off the screw. I have had to do this and I masked the tube so I would not damage it with the drill bit slipping. Removing the screw head make the ball joint easy to remove.
I have two ball joints in stock, I have more on order but with Strida and orders that order is still months away! 
Cheers, Bill