Hi Sakin, thank you for responding. The site url is http://binggou.cn.com/
We have set up “Primary and Secondary Menus”, and then checked option “Enable Secondary & Footer Menu in Mobile Devices” under “Appearance => Theme Options => Responsive Design”.
It all works fine on desktop, but on mobile there is still a bug on the default home page, i.e., neither the Secondary or Footer Menu show up on the opening home page (on Mobile Devices). If you click on the header logo (which redirects to the home page) or any other link and navigate somehow to an inside page, the the Secondary or Footer Menu mysteriously do show up. But the error described above still persists on the default opening home page on Mobile Devices. As I said this bug onkly surfaced a few days ago. I deactivated several plugins (not all of the plugins yet) but it made no difference.
Norbert