Have you set your site access to Public?
Dashboard > Systems & Settings > Permissions & Access > Site Access > change viewing permissions to "Public-anyone may view this website"
If you have that set and its not working, check your advanced permissions for the Home Page and enable public to view.
Dashboard > Systems & Settings > Permissions & Access > Site Access > change viewing permissions to "Public-anyone may view this website"
If you have that set and its not working, check your advanced permissions for the Home Page and enable public to view.