Default Theme Header
The Default Theme Headers can be set up directly from the Theme Options menu Globally for all Pages and Posts. It includes all the default header-related global settings for Top Bar, Main, Menu, and Socials sections.
If default global Header styles are not applied, make sure that custom header is not built using Elementor Header & Footer Builder plugin and selected Display on the Entire website.
In the Social Links section, you can select what social networks to display. To do so just check the needed options.
The social networks buttons will be displayed only if the links to these social networks are provided in the Socials tab (Theme Options > Socials)