"We are not able to install the Demo on our site, So please help us to install the demo."
Please provide an admin account so i can help you check the issue.
Before do it, please be sure your server environment meet our requirements as article bellow to make the theme functions work:
220.127.116.11 username: firstname.lastname@example.org password: Freedom2019
Need help installing theme.
I need a wordpress admin account too.