why can't my client view my web design

I am developing a site for a client, and she is unable to view the page when I send her a link. When I open the link, I can view it, but it also comes up saying page is "protected". I have the Membership plug-in installed and activated, but I have not tried to use it yet. Would you be able to help me find the setting that is causing this to happen? I need her to view it as soon as possible.

If it helps, here is a link to the home page .
http://teachyourselfaforeignlanguage.com/sonia/

My client tried to open this in all browsers on 2 different computers and could not access.

Thanks