Hi Justin
Have you questioned why you are having the video call? This is most unusual to have a second one and you should certainly understand why. They have no right to have a look around your home. I can't tell you what they want to know which they haven't already asked - which is why I think you should query why you are having this and check it is not a mistake.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems