Sergey

...
if(update_field( 'post_status', 2, $postID ) && update_field( 'post_date', $postDate, $postID ) && update_field( 'post_time', $postTime, $postID )){
      echo(json_encode( array('pinned'=>'success', '$postID'=>$postID) ));
    }else{
      echo(json_encode( array('pinned'=>'failure', '$postID'=>$postID) ));
    }
...

...
 success: function (response) {
       if ("success" == response.pinned) {
         console.log('Pin master response : success');
       } else {
         console.log('Pin master response : failure');
       }
      },
 error: function (response) {
        console.log('Error master response : ' , response);
      }
...

$('.son').click(function(){
    console.log('sonFn');
    return false;
});

wp_nav_menu( array(
    'theme_location' => 'main_menu',
    'depth' => 2,
    'container' => false,
    'menu_class' => 'nav navbar-nav',
    //Process nav menu using our custom nav walker
    'walker' => new wp_bootstrap_navwalker())
    );

// Вместо этого хука
/*
add_action('comment_form_after_fields', "recaptchadiv");
function recaptchadiv($post_id) {
global $user_ID;
$recaptcha_site_key = 'Ключ';
if ($user_ID) {
return $post_id;
}
echo '<div class="g-recaptcha" data-sitekey="'.$recaptcha_site_key.'"></div>';
return $post_id;
}*/

// Вставьте этот
add_filter('comment_form_submit_button', 'filter_comment_form_submit_button', 10, 2);

function filter_comment_form_submit_button($submit_button) {
    $recaptcha_site_key = 'Ключ';
    echo '<div class="g-recaptcha" data-sitekey="'.$recaptcha_site_key.'"></div>';

    $submit_before = '<div class="form-group">';
    $submit_after = '</div>';
    return $submit_before . $submit_button . $submit_after;
}

// В последнем хуке удалите проверку юзера, получится так
add_action('preprocess_comment', "preprocess_comment_cb");

function preprocess_comment_cb($commentdata) {
    if ( ! verify_recaptcha_response() ) {
        echo '<p style="font-size: 1rem;">You are not verified reCaptcha test. Return to the <a href="#" 
             onclick="history.go(-1);">previous page </a> and try again.';
        exit;
    }
    return $commentdata;
}

$(".reg-btn").click(function(e){
    e.preventDefault();
    var data_block = $(this).data("block");
    
    if($(this).hasClass("active")){
    	$(document).find(data_block).slideUp();
        $(this).removeClass("active");
    } else {
    	$(this).addClass('active');
    }
        
    $(".block-of-text").toggle(false);
    $(data_block).toggle(true);   
});