I have edited your robots.txt file in your site root to now allow bots. to index profile further .
You also need to re-submit your sitemap.xml to google .
also please add this custom code in your wplms-customizer.php file in wplms customizer plugin :
add_Action('template_redirect',function(){
$user_id = bp_displayed_user_id();
if(!empty($user_id) && !user_can($user_id,'edit_posts') && is_user_logged_in() && $user_id!==get_current_user_id()){
wp_die('Profile cannot be accessed');
}
},1);
this code will allow user to see only instructor's profile and their own when logged in to wordpress otherwise it will block the access to profile.