Fix 264

In this commit, I have fixed the same. fix #264

includes/class-alg-wc-order-fees.php

@@ -139,9 +139,11 @@ public function update_checkout_fees_ajax() {
 			}
 			if ( $add_fees ) {
 				$this->add_gateways_fees( $order, $payment_method );
+
 				// Update payment method record in the database.
-				update_post_meta( $order_id, '_payment_method', $payment_method );
-				update_post_meta( $order_id, '_payment_method_title', $payment_method_title );
+				$order->set_payment_method( $payment_method );
+				$order->set_payment_method_title( $payment_method_title );
+				$order->save();
 			}
 
 			// Declare $order again to fetch updates to post meta and serve to payment templte engine.