Metabox Missing – please add support of a latest version of WooCommerce

Hi. I’ve noticed that your metabox not displayed in the current version of WooCommerce.

Please add array( 'shop_order', 'woocommerce_page_wc-orders' ), here in the signature_order_metabox method:
order-signature-for-woocommerce/includes/class-swph-signature-backend.php:149
https://i.imgur.com/BqgdiuY.png

and extra order ID number check here (it is a class instance currently):
if ( ! is_int( $order_id ) && ! is_string( $order_id ) ) {
$order_id = $order_id->get_id();
}
order-signature-for-woocommerce/includes/class-swph-signature-helper.php:36
https://i.imgur.com/5rLhuwC.png