You might want to look into your permalinks (/about/about,...).

Where do you see a problem? The repeat of "about" in this specific URL? Thanks.

Everything starts with /about/: wookmark.com/about/contact, .. Did you intend this? On the main page you've hidden all the stuff like contact, help, about, etc. behind 'About' link. I understand this. I think you dont have to follow with this pattern and 'hide' all pages 'behind' /about/ in link structure. Made me unnecessary thinking about it.