Thanks for the reply.
Here is reason plugins cannot be automatically installed during demo content installation – https://prnt.sc/hdS6ln3IcPdW – read this post https://crunchify.com/how-to-fix-access-control-allow-origin-issue-for-your-https-enabled-wordpress-site-and-maxcdn/ , contact your hosting provider and ask about assistance.
I’ve installed plugins manually via Dashboard, latest versions of plugins were downloaded from this page – https://www.8theme.com/downloads
Demo content imported. Please check and let us know if you need any further assistance.
About fonts – https://prnt.sc/teuodNN1l00e , you need to fix ” No ‘Access-Control-Allow-Origin’ header is present on the requested resource ” as was mentioned.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.