Using sensei_user_quiz_status to change the quiz info box message ( text, css class and status )

functions.php

// register the action filter
add_filter('sensei_user_quiz_status', 'custom_sensei_quiz_status',  20 , 3 );

/**
 * Custom function that hooks into sensei_user_quiz_status
 *
 * @param array $status_data{
 *   type string $status
 *   type string $box_class
 *   type string $message
 *   type string $extra
 * }
 * @param int $lesson_id
 * @param int $user_id
 *
 * @return array $status_data
 */
function custom_sensei_quiz_status( $status_data, $lesson_id , $user_id ){

    //change the $status_data message
    $status_data['message'] = "New Custom Status message";

    //change the $status_data box class
    // Sensei Defaults: info, tick, alert
    $status_data['box_class'] = "tick"; // you may change this if you want a custom icon

    //change the status
    // Sensei Defaults: not_started_course, login_required, passed ,complete, failed, not_started
    $status_data['status'] = "failed";

    //return the full status array
    return $status_data;

}// end custom_sensei_quiz_status