1.Log into your cPanel account and navigate to SSL/TLS Status in the Security section.
2.Click the domain(s) you'd like to install a SSL on and click Run AutoSSL.
3.AutoSSL will take a few minutes to finish. When it completes successfully the page will update with a success notification.
4.Next cPanel will automatically poll Comodo for a new SSL. This polling process usually takes a few minutes but can last up to a day or more (since there are restrictions on the number of requests that can be made per day). Once it has completed your domain will have a new valid AutoSSL installed.