
@sallymack Looking at your site's source, there are two menus in your layout.
The main menu (#ast-desktop-header) is visible on desktop (or any viewport larger than 921.99px wide, going by the CSS). The second menu, for mobile (#ast-mobile-header), is visible at viewport widths less than 922px.
Resizing your Firefox window to be narrow like a phone screen should show the same behavior you're noticing on your phone and laptop.
The WP Menus used in each context are different menus (going by the menu-item-* CSS classes). Also, the desktop version doesn't have the Galleries link while the mobile one does.
Some places to look around:
Does your theme have settings that control which WP Menus are placed in the desktop and mobile menus?
The WP Menu used in the mobile menu may have the "Automatically add new top level pages to this menu" enabled in the WP Menu's settings.










