Помогите с функциями Woocommerce

Всем привет, прошу помочь вывести кастомные поля чекаута в pdf шаблон плагина.

В функциях темы прописаны кастомные поля в шаблон письма таким образом:

add_filter('woocommerce_email_order_meta_keys', 'my_custom_checkout_field_order_meta_keys');

function my_custom_checkout_field_order_meta_keys( $keys ) {

    $keys['Дата доставки'] = 'shipping_date';

	$keys['Время доставки от'] = 'shipping_time';

	$keys['Время доставки до'] = 'shipping_time2';

	$keys['ФИО получателя'] = 'shipping_fio_s';

	$keys['Телефон получателя'] = 'shipping_phone_s';

	$keys['Подъезд'] = 'shipping_entrance_s';

	$keys['Код'] = 'shipping_code_s';

	$keys['Этаж'] = 'shipping_floor_s';

    $keys['Подписаться на новости'] = 'billing_news';

	$keys['Улица'] = 'billing_street';

	$keys['Дом'] = 'illing_building';

	$keys['Квартира'] = 'billing_apartment';

    return $keys;

И есть шаблон плагина, который делает инвойсы в PDF, но кастомные поля там не отображаются, вот его код

<?php do_action( 'wpo_wcpdf_before_document', $this->type, $this->order ); ?>



<table class="head container">

	<tr>

		<td class="header">

		<?php

		if( $this->has_header_logo() ) {

			$this->header_logo();

		} else {

			echo $this->get_title();

		}

		?>

		</td>

		<td class="shop-info">

			<div class="shop-name"><h3><?php $this->shop_name(); ?></h3></div>

			<div class="shop-address"><?php $this->shop_address(); ?></div>

		</td>

	</tr>

</table>



<h1 class="document-type-label">

<?php if( $this->has_header_logo() ) echo $this->get_title(); ?>

</h1>

<?php do_action( 'woocommerce_admin_order_data_after_shipping_address', $this->type, $this->order ); ?>

<?php do_action( 'wpo_wcpdf_after_document_label', $this->type, $this->order ); ?>



<table class="order-data-addresses">

	<tr>

		<td class="address billing-address">

			<!-- <h3><?php _e( 'Billing Address:', 'woocommerce-pdf-invoices-packing-slips' ); ?></h3> -->

			<?php $this->billing_address(); ?>

			<?php if ( isset($this->settings['display_email']) ) { ?>

			<div class="billing-email"><?php $this->billing_email(); ?></div>

			<?php } ?>

			<?php if ( isset($this->settings['display_phone']) ) { ?>

			<div class="billing-phone"><?php $this->billing_phone(); ?></div>

			<?php } ?>

		</td>

		<td class="address shipping-address">

			<?php if ( isset($this->settings['display_shipping_address']) && $this->ships_to_different_address()) { ?>

			<h3><?php _e( 'Ship To:', 'woocommerce-pdf-invoices-packing-slips' ); ?></h3>

			<?php $this->shipping_address(); ?>

			<?php } ?>

		</td>

		<td class="order-data">

			<table>

				<?php do_action( 'wpo_wcpdf_before_order_data', $this->type, $this->order ); ?>

				<?php if ( isset($this->settings['display_number']) ) { ?>

				<tr class="invoice-number">

					<th><?php _e( 'Invoice Number:', 'woocommerce-pdf-invoices-packing-slips' ); ?></th>

					<td><?php $this->invoice_number(); ?></td>

				</tr>

				<?php } ?>

				<?php if ( isset($this->settings['display_date']) ) { ?>

				<tr class="invoice-date">

					<th><?php _e( 'Invoice Date:', 'woocommerce-pdf-invoices-packing-slips' ); ?></th>

					<td><?php $this->invoice_date(); ?></td>

				</tr>

				<?php } ?>

				<tr class="order-number">

					<th><?php _e( 'Order Number:', 'woocommerce-pdf-invoices-packing-slips' ); ?></th>

					<td><?php $this->order_number(); ?></td>

				</tr>

				<tr class="order-date">

					<th><?php _e( 'Order Date:', 'woocommerce-pdf-invoices-packing-slips' ); ?></th>

					<td><?php $this->order_date(); ?></td>

				</tr>

				<tr class="payment-method">

					<th><?php _e( 'Payment Method:', 'woocommerce-pdf-invoices-packing-slips' ); ?></th>

					<td><?php $this->payment_method(); ?></td>

				</tr>

				<?php do_action( 'wpo_wcpdf_after_order_data', $this->type, $this->order ); ?>

			</table>			

		</td>

	</tr>

</table>



<?php do_action( 'wpo_wcpdf_before_order_details', $this->type, $this->order ); ?>



<table class="order-details">

	<thead>

		<tr>

			<th class="product"><?php _e('Product', 'woocommerce-pdf-invoices-packing-slips' ); ?></th>

			<th class="quantity"><?php _e('Quantity', 'woocommerce-pdf-invoices-packing-slips' ); ?></th>

			<th class="price"><?php _e('Price', 'woocommerce-pdf-invoices-packing-slips' ); ?></th>





		</tr>

	</thead>

	<tbody>

		<?php $items = $this->get_order_items(); if( sizeof( $items ) > 0 ) : foreach( $items as $item_id => $item ) : ?>

		<tr class="<?php echo apply_filters( 'wpo_wcpdf_item_row_class', $item_id, $this->type, $this->order, $item_id ); ?>">

			<td class="product">

				<?php $description_label = __( 'Description', 'woocommerce-pdf-invoices-packing-slips' ); // registering alternate label translation ?>

				<span class="item-name"><?php echo $item['name']; ?></span>

				<?php do_action( 'wpo_wcpdf_before_item_meta', $this->type, $item, $this->order  ); ?>

				<span class="item-meta"><?php echo $item['meta']; ?></span>

				<dl class="meta">

					<?php $description_label = __( 'SKU', 'woocommerce-pdf-invoices-packing-slips' ); // registering alternate label translation ?>

					<?php if( !empty( $item['sku'] ) ) : ?><dt class="sku"><?php _e( 'SKU:', 'woocommerce-pdf-invoices-packing-slips' ); ?></dt><dd class="sku"><?php echo $item['sku']; ?></dd><?php endif; ?>

					<?php if( !empty( $item['weight'] ) ) : ?><dt class="weight"><?php _e( 'Weight:', 'woocommerce-pdf-invoices-packing-slips' ); ?></dt><dd class="weight"><?php echo $item['weight']; ?><?php echo get_option('woocommerce_weight_unit'); ?></dd><?php endif; ?>

				</dl>

				<?php do_action( 'wpo_wcpdf_after_item_meta', $this->type, $item, $this->order  ); ?>

			</td>

			<td class="quantity"><?php echo $item['quantity']; ?></td>

			<td class="price"><?php echo $item['order_price']; ?></td>

		</tr>

		<?php endforeach; endif; ?>

	</tbody>

	<tfoot>

		<tr class="no-borders">

			<td class="no-borders">

				<div class="customer-notes">

					<?php do_action( 'wpo_wcpdf_before_customer_notes', $this->type, $this->order ); ?>

					<?php if ( $this->get_shipping_notes() ) : ?>

						<h3><?php _e( 'Customer Notes', 'woocommerce-pdf-invoices-packing-slips' ); ?></h3>

						<?php $this->shipping_notes(); ?>

					<?php endif; ?>

					<?php do_action( 'wpo_wcpdf_after_customer_notes', $this->type, $this->order ); ?>

				</div>				

			</td>

			<td class="no-borders" colspan="2">

				<table class="totals">

					<tfoot>

						<?php foreach( $this->get_woocommerce_totals() as $key => $total ) : ?>

						<tr class="<?php echo $key; ?>">

							<td class="no-borders"></td>

							<th class="description"><?php echo $total['label']; ?></th>

							<td class="price"><span class="totals-price"><?php echo $total['value']; ?></span></td>

						</tr>

						<?php endforeach; ?>

					</tfoot>

				</table>

			</td>

		</tr>

	</tfoot>

</table>



<?php do_action( 'wpo_wcpdf_after_order_details', $this->type, $this->order ); ?>



<?php if ( $this->get_footer() ): ?>

<div id="footer">

	<?php $this->footer(); ?>

</div><!-- #letter-footer -->

<?php endif; ?>

<?php do_action( 'wpo_wcpdf_after_document', $this->type, $this->order ); ?>

Задача в нужном месте шаблона PDF инвойса выводить нужные кастомные поля по отдельности - 'shipping_date', 'shipping_tme'

и другие.