Hi there,

The transparent homepage was added in theme version 1.3. Please check which version you're running by clicking the theme thumbnail image via Appearance > Themes.

If you have a version below 1.3 please see this article how-to update the theme: Update WordPress Theme

If you're running 1.3 or newer you can set the header layout for the entire theme via Appearance > Customize > Theme Options > Header > Header Layout. 

But you can also set the header layout on page level. For example; If you have selected the default header in the customizer but want the transparent header for the homepage only. 

Please navigate to Pages > Edit Front Page and scroll to the bottom of the page where you will see the 'Header Layout' metabox.

If you have any questions, feel free to ask.

Great! You're welcome.

This is not related to this ticket but I noticed the following:

I just navigated through your site and noticed there is also some margin around the page header on the sub pages. Looking in the source code I see there is a bootstrap stylesheet added by an additional plugin named 'Content Maker' (probably another page builder or shortcode plugin i guess). The stylesheet is enqueued after our theme stylesheet so it is overwriting our theme styles. You can fix this by deactivating the plugin or add this to the custom css field in the customizer:

.page-header { margin: 0; }