Avada Theme Course and Lesson Sidebar Compatibility
As of March 2017, the recommend method for sidebar compatibility is to use LifterLMS Labs: Super Sidebars, a free add-on that allows you to add sidebar compatibility to just about any theme in a matter of seconds without having to write any code. See the full tutorial here.
LifterLMS Course and Lesson sidebars work just fine on the Avada theme but they visually don’t match the styles defined by the Avada stylesheet without adding this compatibility snippet to your child theme’s functions.php file.