How to update Site Map

Hi, I know that the Site Map is located at https://www.freelensia.com/sitemap.xml.gz
However when we open this xml file, we only see /listings/… URLs. We do not see the About pages. Also, our developers added a blog feature with many sub-pages but they don’t show up in the site map either.

How do we update the sitemap? Is it done automatically via some tasks?

That file is indeed generated automatically, mostly via the controller at https://github.com/sharetribe/sharetribe/blob/master/app/controllers/sitemap_controller.rb

This is what you should probably update if you want to add other content there.