I wonder if this is a known bug in the x100f and/or fuji remote app and/or my brain:
Connects fine and will take one picture and then the camera just gets stuck in processing - the blinking lights - and if you touch the app it gives a 'still processing' popup.
Only way out is to disconnect. But the picture is there, so processing did complete.
I can't think of any logical reason for this & looks like a camera bug. & makes the remote app unusable.