Hi, thanks for trying my plugin!
The reason why it’s not working, is because the menu on the home page is a different element than the menu on all other pages.
You’ve selected the element #masthead to be sticky, and that works on all pages.
However on the home page, this element doesn’t exist; it appears that this specific page is created with Elementor, and therefore all elements on the page have different classnames.
In order to make it work, you’d have to be consistent with that — either use Elementor for all pages, or use it for none.
Hope this explains it!
