edit

lib/Yspay.php

@@ -306,7 +306,7 @@ class Yspay extends Core
 					continue;
 				}
 				
-				$subOrders['mid'] = $other['mid'];
+				$subOrders['mid'] = $v['mid'];
 				if (isset($this->config['prefix']) && $this->config['prefix']) {
 					$subOrders['merOrderId'] = $this->config['prefix'] . $v['order_id'];
 					if ($refund_order_id) {