I have setup SSL (Origin Server) Full Strict using Cloudflare using apache2. when i visit the website https://xarkfashion.com/ or https://www.xarkfashion.com/ it shows connection is not secured ( Your connection is not private.) but if i check the SSL certificate, it shows certificate is not valid, it also shows Common Name (CN)
Your site is working ok for me. Maybe your unproxied IP address is still cached at your end and you are connecting directly to the origin server. You seem to be using a Cloudflare origin certificate which is only trusted by Cloudflare so the proxy needs to be used.
As your site is proxied, clear your browser cache or try private/incognito mode to see if you reach your site correctly.