Camera flash gun

I have a couple of flashguns for my cameras the main one being a Godox V860iii . This had me scratching my head a hell of a lot
I just could not understand why I couldn’t get it to auto distance settings. Maybe it needed upgrade? NO this is the latest version. So a little more digging and research. In actual fact a almost to the bottom of the pit ,so to say.
Like most flashguns they have diffuser built in which can be pulled out. Now I never ever gave that a thought, but that was the cause . It was not pushed back in to the retaining slot which I found out can cause this problem

showing diffuser and bounce flash card partly out from retaining slot

just sold my Nikon sb900 flashgun. Now waiting for another Godox V860iii to come. Makes things easier using the same make of gear.