You can start importing Elementor demo content after these simple steps.
First, make sure that Elementor plugin is installed and activated in your WordPress:
After that, open Elementor settings from the left sidebar, then check the options Footers, Popups and Portfolio then save the changes.
After that you will be ready to start importing the demo content by going to the WordPress Panel > Essentials > Demo import page, and make sure to select the Elementor version (not WPBakery) when choosing a demo content.
For detailed information about importing Demo content please check the article below: