After filling out that form, it leads to a 'not found' page. Is there any other way to get a trial of CF 2016?
If you (or anyone seeing this) still has this trouble, try opening your browser's "incognito" or "private" window feature (google it to find out more), so that when you visit the site your browser won't send any cookies. Usually when you visit an Adobe page that doesn't work like it should, it's seemed in my experience to be some problem with cookies.
Or you could try visiting the site in a different browser, assuming you've not visited the site in that browser.