Few things to understand about the directory, unless a member chooses to publish their information to “Everyone” meaning public they will not show up.
The next level is to publish their information to other members, which requires the person searching to be logged into their own account.
The third level is that all the members information is private and not published to the public or other members.
If you would like to modify how your information is published, login to your account, click View Profile on the bottom left under the menu. Click Edit Profile, choose what information you would like published to Everyone, Members, Private.