How to edit pages with Elementor page builder?

You can go to Pages > All Pages and if you see Elementor after some pages it means that you are imported the Elementor version of the demo website.

All pages created by Elementor have an “Edit with Elementor” link on all pages.

You can click on it and go to the Elementor page builder page to edit this page.

Also on the front page, you have the “Edit with Elementor” button on the Admin bar, click on it to edit that page with Elementor.