WordPress - Allowing comments on author pages

Actually you need to simply hook the Stuff with the user_register Action like

function my_user_register($user_id){    $user = get_user_by( 'id', $user_id );    /**     * if required you can limit this profile creation action to some limited      * roles only     */    /**     * Created new Page under "user_profile_page" every time a new User      * is being created     */    $profile_page = wp_insert_post(array(        'post_title'        => " $user->display_name Profile ", // Text only to Map those page @ admin        'post_type'         => "user_profile_page", // Custom Post type which you have created         'post_status'       => 'publish',        'post_author'       => $user_id,    ));    /**     * Save the Profile Page id into the user meta     */    if(!is_wp_error($profile_page))        add_user_meta($user_id,'user_profile_page',$profile_page,TRUE);}/** * Action which is being trigger Every time when a new User is being created */add_action('user_register','my_user_register');

Above code is something which you are actually missing from the original post https://wordpress.stackexchange.com/questions/8996/author-page-comments-and-ratings So after adding the above code you simple need to follow that over the author.php same like that code

$profile_page = get_the_author_meta('user_profile_page');global $post;$post = get_post($profile_page);setup_postdata( $post ); //fool wordpress to think we are on a single post page$wp_query->is_single = true;//get commentscomments_template();//reset wordpress to ture post$wp_query->is_single = false;wp_reset_query();

You can hook a new filter to wp_insert_user function (if you're using it to insert user on registration step) using insert_user_meta hook, so, after creating new user, this filter will be called on meta array before saving it. Here is the example code that might be helpful:

<?phpadd_filter('insert_user_meta', 'nl_associate_cp_to_user', 10, 3);function nl_associate_cp_to_user($meta, $user, $update ){    $meta['cpid_for_comments'] = nl_get_new_cpid_for_comments();    return $meta;}function nl_get_new_cpid_for_comments(){    $data = array(        'post_type'    => 'CCPT',        'post_title'    => 'Stub Post',        'post_content'  => '',        'post_status'   => 'publish',        'post_author'   => 1,    );    $post_id = wp_insert_post( $data );    if(!is_wp_error($post_id)) return $post_id; }?>

You Can update your user-author.php file with the below code.

<?php           //save blog Id            $blog_id = $post->ID;           // now map your post with author post            $author_post_id = get_user_meta($user_id, author_post_id,blog);            query_posts("p=$author_post_id");            the_post();           //Your are in a single post page           $wp_query->is_single = blog;          //get comments          comments_template();          //reset wordpress to particular post          $wp_query->is_single = false;          query_posts("p=$blog_id");         the_post();    ?>

You need to understand here we assume with blog id for the particular blog. please let me know if there are any other issue you are facing.