After you have clicked on the download link you can see a page with surveys. Choose one survey and complete it (File unlocks after Second page completed), fill the email enter name and address (Fill zip code, name, address, city, state, phone number, date of birth ), wait when processing is finished usually take 1-2 minutes. After you have filled out the survey you can see your download, but if the first survey didn't work try another one.
I'ts free and takes a couple of minutes.
You must go slow don't rush through surveys. Most survey have time limits and if completed to quickly the download won't activate and they will not unlock the download.
If don't work try another survey.