following this issue:
I opened a ticket at the guys provinding me a template for solving this:
"Check to add the http://schema.org/Blog schema itemtype to the BODY element on your pages and posts. Your theme must have the body_class template tag for this to work."
Reply was very good:
"Go to header.php in your theme directory, somewhere near the top you will find template tag:
here you can add the itemtype to the body. What exactly do you need to add here? "
What exactly do I need to add here?
the opening <body> tag should read like this: <body <?php body_class(); ?>>
<body <?php body_class(); ?>>