Go to Header Options tab, and look for the Sticky Header option.
Enable it if you want the mobile header/menu icons to stay fixed at the top.
And disable it if you want the mobile header/menu icons to scroll with the content disappearing when you scroll down.
![How to make the mobile menu header sticky or unsticky? 1 mobile menu sticky header](https://www.wpmobilemenu.com/wp-content/uploads/2019/04/mobile_menu_sticky_header.png)