Hi,Which version of FaceFilter are you referring to? FF1, FF2, Studio, Live etc.
If you are running FaceFilter Studio 2.0 then the help system is part of the program and is accessed by clicking the "?" button at the top right of the screen (or press F1). There is nothing to download.
Could you explain a little more about what the problem is you are having. I'm puzzled by your reference to downloading "Help".
You can also contact Support if you wish. Click on the link below to go to the Support Form.
http://www.reallusion.com/CustomerSupport/User/QForm.aspx