Grand Conference Theme bug

I purchased Grand Conference theme a week ago and now find that the mobile view side menu has a bug. It shows the top level menus labels but when you click on one that has a sub menu, you get rooted to the submenu page not the top level page label you clicked on. The top level menu label disappears.

does anyone have some idea what’s going on and how to change it? I see Grand Conf did a theme update only yesterday but I am worried if I install that, it will wipe out my custom CSS etc.


Contact with your item author hope they will help you out from your issue