Admin Menu Conflict with Caldera Forms Plugin
LifterLMS and Caldera Forms both add content at the same menu position. This causes the LifterLMS Courses menu item to disappear on the admin panel.
To resolve this issue, add the following code snippet to your theme’s functions.php file or to a custom plugin.
This will change the menu positioning of the Courses menu and allow both Courses and Caldera Forms to display.