1. Kindly login to https://IPAddress:8443 or https://hostname:8443 with your Plesk
Admin login detail from Product Welcome Email we have provided.
2. Click on the “Websites & Domains” tab on the navigation bar on the left side of
the page. All of your hosted websites will be shown.
3. Choose the domain that you wish to remove or delete and click on “Show More” to show more options.
4. Click on "Remove Subdomain" to remove/delete the website.
5. A confirmation window will be pop out, Click "Yes" to completely remove the website including all the data.
Note:
Your subdomain, email accounts, databases and etc will also be deleted after you remove a domain. All related files and data will be deleted, so be careful while performing delete and remove domain