To install an SSL certificate, go to the "SSL/TLS" section in your cPanel.
Go to the "Manage SSL Sites" subsection.
Select the desired domain.
After creating the SSL certificate, you will receive a certificate code.
Paste the SSL code from the "domain_name.crt" file into the "Certificate (CRT)" field.
The certificate code will look like this:
In the "Private key (KEY)" field, paste the key code. You received the key code by creating a CSR request.
The key code (KEY) looks like:
Click "Install Certificate".
Certificate installed