In EHQ there a two basic 'layers'. One is the admin view (or dashboard), where you manage your projects and edit the content; the other is the actual site that the public sees.
Whenever you want to link to anything on your site, you will have to make sure you use the link you obtain from the public facing site, NOT from within the dashboard.
For example, lets assume you want to link from your landing page through to a project page. To obtain the right link, go into the project page you want to link to and click on 'Preview' in the top right hand corner. This will open the project page in a new tab.
The URL for the previewed project will look like this: "http://sitename.com.au/projectname?preview=true'. What you want to copy is everything except for '?preview=true'. This is the link that you can now use to link to your project page from your landing page.
In this case the link would be http://demonstration.engagementhq.com/stories