Please add this code in your wp-content/plugins/wplms-customizer/wplms-customizer.php file :
add_filter('wplms_instructor_courses_style','change_featured_block_in_instructor_courses');
function change_featured_block_in_instructor_courses($block){
return 'course';
}
Where 'course' in line
return 'course';
can be changed to any featured block name