Hello
On at least two recent demos, once the demo has been imported, I noticed this line when viewing the Home page source code:
<link rel="canonical" href="https://xstore.8theme.com/elementor/demos/digital-marketing/" />
The above line of code instructs Google Webmaster Tools that the site is not the main site and is a duplicate of xstore.8theme.com/elementor/demos/digital-marketing. This means that the site will never be fully listed on Google search results.
This seems to be a recent error on your demos, including the Digital Marketing one and the Minimal Fashion 03. I suspect others have this erroneous piece of code.
The code shows up if Yoast SEO plugin is already installed before the import. It is importing that into Yoast on the new site. It can be removed here below whilst editing the Home Page’s Yoast settings under advanced:
Anyone who imports those demos who uses Yoast will also import the error and have issues with the URL being listed in Google Webmaster Tools sitemaps as a non-canonical page, and the page(s) will not be listed in search results. It seriously needs fixing on the demo sites.
Regards
Robert