We did not said that it's better These options are completely different. Built-in seo fields are for users who don't need advanced seo settings and don't know to much about that. But if someone needs much more then title, description or keywords, and of course know a lot about seo then should use external plugin like Yoast.
If the bots don't see the content, then you must check robots.txt file or .htaccess. Probably something is blocked and that's why content is not visible for bots.
Comments
and choose Hide The Content
what google boots read ?
the output from the Builder>>SEO or from Muffin bulder?
2. Google bots read the content which is under Muffin Builder. The content from Builder >> SEO option is not visible for bots.