All our hosting accounts have built-in free SSL certificates of the cPanel brand. CPanel certificates install automatically after adding a domain in Additional domains in cPanel. There is no need to install the certificate manually.
In addition, you can install free Let's Encrypt certificates. The installation of the certificate is very simple and takes a few seconds. The cPanel certificate offers the same level of security as the Let's Encrypt certificate, so installation is optional.
Details about SSL certificate: https://www.smarthost.eu/free-ssl-certificates-for-all-domains