I can't figure out how to make the main links in the navigation get found. For example, the About link is http://www.hypermilersunite.com/about. Older versions of WP used: http://www.hypermilersunite.com/?page_id=2. How do I change this and make it work? This new version of WP doesn't seem to offer a way to change the URL of the navigation. I looked all over, in settings and stuff. Thank you!