Hi Yannis,
May I know which blog post are you referring to as per your screenshot given above?
Can you provide us the link to the page so it is easier for us to see the issue and is it possible for you to provide us with the FTP access to your site to check on this issue?
You can add the information needed by edit your first post in the Details section or you can just include your site's access once at
http://stackideas.com/dashboard/site rather than needing to keep adding them in your replies