James, I am having the same issue as above. I placed this code in both themes’ functions.php:
register_nav_menus( array(
‘header_menu’ => __( ‘Header Menu’, ‘main navigation menu’ )
) );
I am not sure how to populate both menus while the default theme is active. Can you give me some advice?
When I load the mobile site, the actual menu links aren’t there, but the styling for them is all as it should be.