I opened the files that are in that zip on the post, then added a floor in Revit 2021 and assigned it to the first input on the Gh script, added points that are inside the perimeter of the floor in plan view and assigned them to the second input on the Gh script, and here is what I see:
Check that your points are contained (in plan view) inside the floor’s sketch/perimeter. You may need to verify that you have the correct floor object (by viewing it in Rhino via Gh) to ensure this.
Edit: also why did you post this question in a relevant post, but then also asked a duplicate question in a new post?