That site is not a free hosted WordPress.COM blog and that means you are posting to the wrong support forum. We cannot help you here. This is the correct forum for your software http://wordpress.ORG/support/ If you have not registered a WordPress.org username account yet you can do so on the top right hand corner of the page I just linked to so you can post to those support forums.
WordPress.com vs WordPress.org: The Differences http://support.wordpress.com/com-vs-org/
Best wishes with your site.