echo '<p>' . __( 'Invoice for the order:', 'flexible-invoices-woocommerce' ) . ' <a href="' . admin_url('admin-ajax.php?action=invoice-get-pdf-invoice&id=' . $invoice->getId() . '&hash=' . md5(NONCE_SALT . $invoice->getId()), 'admin') . '">' . __( 'download PDF invoice &raquo;', 'flexible-invoices-woocommerce' ) . '</a>';		        echo '<p>' . __( 'Invoice for the order:', 'flexible-invoices-woocommerce' ) . ' <a href="' . admin_url('admin-ajax.php?action=invoice-get-pdf-invoice&id=' . $invoice->getId() . '&hash=' . md5(NONCE_SALT . $invoice->getId()), 'admin') . '">' . __( 'download PDF invoice &raquo;', 'flexible-invoices-woocommerce' ) . '</a>';