Problem with WordPress SEO and Woocommerce category display

This issue had been raised before but I cannot find a solution. When I activate Yoast WordPress SEO then my category pages show all the products instead of subcategories thumbnails. When yoast is deactivated everything works fine. Any advise?

http://wordpress.org/support/topic/plugin-wordpress-seo-by-yoast-problem-with-wordpress-seo-and-woocommerce-category-display?replies=4

Thanks

http://wordpress.org/plugins/wordpress-seo/