You can Configure the header of your website by navigating through:
Dashboard >> Appearance >> Customize >> Desktop Header >> Select Header.
Here you will find the following options:
1) Select Header
Header Type: This allows you to select the default theme header or a header made by Elementor.
If you enable the option “Elementor Header” then you will get the drop-down “Select Header” listing Elementor header so that you can select it from.