diff --git a/inc/mep_functions.php b/inc/mep_functions.php
index e0832da..454a66b 100755
--- a/inc/mep_functions.php
+++ b/inc/mep_functions.php
@@ -1004,7 +1004,7 @@ if (!function_exists('mep_attendee_status_update')) {
         // Getting an instance of the order object
         $order              = wc_get_order($order_id);
         $order_meta         = get_post_meta($order_id);
-        $email              = isset($order_meta['_billing_email'][0]) ? $order_meta['_billing_email'][0] : array();
+        $email              = isset($order_meta['_billing_email'][0]) ? $order_meta['_billing_email'][0] : $order->get_billing_email();
         $email_send_status  = mep_get_option('mep_email_sending_order_status', 'email_setting_sec', array('disable_email' => 'disable_email'));
         $email_send_status  = !empty($email_send_status) ? $email_send_status : array('disable_email' => 'disable_email');
         $enable_billing_email   = mep_get_option('mep_send_confirmation_to_billing_email', 'email_setting_sec','enable'); 
@@ -1066,6 +1066,7 @@ if (!function_exists('mep_attendee_status_update')) {
                     change_extra_service_status($order_id, 'publish', 'trash', 'completed');
                     change_extra_service_status($order_id, 'publish', 'publish', 'completed');
                     do_action('mep_wc_order_status_change', $order_status, $event_id, $order_id);
+
                     if (in_array('completed', $email_send_status)) {
                         mep_event_confirmation_email_sent($event_id, $email, $order_id);