Sketchup2xplane

Hi all, I am new to sketchup and am trialing 2020 ver before buying. I am an avid experienced x-plane 11 flyer and wish to animate objects and place into x-plane, however I am not sure how to use skletchup2xplane in Sketchup as I am getting the unassigned message ?. I assume I need to use the sketchup2xplane to do this but am not having much success.
Any help would be very appreciated.
John