Add the title of the payment and custom field from payment in woocoomerce emails

woocoomerce-payment-custom-field

/**
 * This function will add the Payment title method to the emails
 */
add_action( 'woocommerce_email_before_order_table', 'add_payment_method_to_new_order', 10, 2 );
function add_payment_method_to_new_order( $order) {

    $method = get_post_meta( $order->id, '_payment_method', true );
    $method_1 = "directdebit";
    $method_2 = "cecdebit";

    if ( $method == $method_1 ) {
        $cec_number = get_post_meta($order->id, 'dg_iban_number', true);
        echo '<p><strong>Payment Method:</strong> ' . $order->payment_method_title . '| Termen: ' . $cec_number . '</p>';
    } elseif ( $method == $method_2 ) {
        $dg_iban_number = get_post_meta($order->id, 'dg_iban_number', true);
        echo '<p><strong>Payment Method:</strong> ' . $order->payment_method_title . '| Termen: ' . $dg_iban_number . '</p>';
    } else {
        echo '<p><strong>Payment Method:</strong> ' . $order->payment_method_title . '</p>';
    }
}