To generate the CSR please follow the below given steps:
1: Open the Cpanel with the login details you have received on your registered mail.
2: Under SECURITY section there is an option named as "SSL/TLS".
3: Once you click on it you will see further options from those options please select "CERTIFICATE SIGNING REQUESTS" to generate CSR.
4: Once you click on it then you need to fillup the details of domain name,city,state,email and other personal details.
5: Once you done click on "GENERATE" then the CSR will be generated and you can provide that to your SSL provider for further process.