Yeah it’s missing on your end. Are you using another SEO plugin? If so, Genesis’ SEO automatically deactivates so you can use the plugin instead of Genesis – http://my.studiopress.com/docs/genesis-seo-settings/ …..if you do have another SEO plugin active then maybe thats where you added the text perhaps?
Check out that link above and see if that helps. That’s what the SEO settings page looks like.
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