omarhadidy on "[Plugin: WordPress SEO by Yoast] sitemap_index.xml don't appear"

First, when open the site map does not show knowing I use cloudflare and W3 Total Cache .
Secondly, when I update wordpress seo my Site Map appear 404! page in order to appear to be to go to the site map options do I cancel my map and re-activated again to show

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