Here's how you can disable Course Categories in Breadcrumbs from version 1.5.5 .

1. Install the WPLMS Customizer plugin.
2. Go to WP Admin -> Plugins -> Editor -> wplms customizer -> customizer_class.php
3. Locate function _construct and add the following code:

PHP Code:

   

add_filter('wplms_breadcrumbs_course_category',array($this,'mycustom_breadcrumbs_course_category'),10);

   

4. Add the following function in the class:

PHP Code:

   

  function mycustom_breadcrumbs_course_category($course_category){
      return '' ;
    }