When I view my own Facebook profile as seen by public, I noticed Message button is disabled as shown in picture below. This means public who are not my friends will not be able to message me or send me message request.
My setting page is:
Other forums suggest there is settings page under Privacy and there is a link like "Who can send you Facebook messages?: (drop drown selection button)" But there is no such link.
I want to enable Message button on my public profile. How can I do that?
Screenshot showing privacy settings: