add

app/models/user/User.php

@@ -79,6 +79,7 @@ class User extends BaseModel
             'user_type' => 'wechat',
             'trade_pwd' => md5(md5(123456)),
             'site_id' => $site_id,
+            'is_promoter' => 1,
         ]);
         return $res && UserSpread::setSpread($wechatUser['uid'], $spread_uid);
     }