Tutor Learning Management Systems was primarily designed to help you administer and teach eLearning courses online. Now you can change the authorship with this plugin. Go to modify plugin file: /wp-content/plugins/tutor/blob/master/classes/Course.php Line# 40 and remove this code add_filter('wp_insert_post_data', array($this, 'tutor_add_gutenberg_author'), '99', 2); Now you can change the Author with this plugin. If you need more assistance, contact me