Have figured out what the problem is.
My default browser, Internet Explorer is sending me to a different User page, when I click on the user name.
I downloaded Google Chrome, and logged in to the site, then clicked on the user name, and see what you guys were talking about.
Was able to leave the feedback that I had been trying to do.
I found an easier way to do it though too, in all this troubleshooting.
As long that someone has already been provided iTrader feedback, clicking on that numerical component adjacent to their user name, it opens a page where a further link is present to "Submit Feedback For (User)". That, I had unfortunately / ignorantly overlooked before...