Valkyrie Spotlight Pass

I am having the same problem. Not being able to complete the challenge.  I have completed everything else. I have tried In Flight, Using Scoped weapon, spotting on a scan, and with tactical. Also tried as others suggested using mouse button. My mouse wheel buttons are bound to certain functions.  Is there a Certain Key to press maybe?

Update:  I have completed everything else: On the "Challenges Tab" it is marked as complete with a tick mark.  But on the "Spotlight Pass" screen it shows that I need 3 more points. It appears that there is some kind of glitch not allowing it to be reconciled.