After loading the demo data I get 20 errors. It seems the the url is hard coded to your domain.
Also there seems to be js files missing during the install. I have put xxxxx in my domains name location.
Access to XMLHttpRequest at ‘https://themelooks.net/demo/dvpn/wp-content/uploads/2020/08/sticky_logo.svg’ from origin ‘http://xxxxxxx.com’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.
themelooks.net/demo/dvpn/wp-content/uploads/2020/08/sticky_logo.svg:1 Failed to load resource: net::ERR_FAILED
(index):1 Access to XMLHttpRequest at ‘https://themelooks.net/demo/dvpn/wp-content/uploads/2020/08/sticky_logo.svg’ from origin ‘http://xxxxx.com’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.
themelooks.net/demo/dvpn/wp-content/uploads/2020/08/sticky_logo.svg:1 Failed to load resource: net::ERR_FAILED
DevTools failed to load SourceMap: Could not load content for http://xxxxx.com/wp-content/themes/dvpn/assets/js/bootstrap.bundle.min.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE
DevTools failed to load SourceMap: Could not load content for http://xxxxxxy.com/wp-content/themes/dvpn/assets/css/bootstrap.min.css.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE