While inspecting your Website, it is seen that the Home Link in your menu is actually custom link to your website URL and not a page link in the primary menu.
To get the results like in the demo of Onefold Pro theme, you can remove the custom home link and add the page that you have set in static front page to the menu Labeling it as “Home” from your Admin Dashboard > Appearance > Menus.
This will give you the same menu format / functionality as in the Demo of the theme.
if you have any confusions further please feel free to post your queries here.
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