I want to set up the same mobile sidebar menu as the retail demo in my store, but after I add the mobile menu in the header build and select the main menu, there is no pop-up menu after clicked the icon on the mobile phone.
Please Help me,
Regards
Your purpose is not clear enough. You have set one and the same menu for both the main and mobile menu and the same is reflected. Please provide more details on what menu you want to show on mobile and as the main menu.