Hi @robh and welcome to the LE community forum 
If you would like to continue using FREE LE certs, there may be a (quick manual) client that can be used on cPanel.
See:
CertSage ACME client (version 1.2.0) - easy webpage interface, optimized for cPanel, no commands to type, root not required - Client dev - Let's Encrypt Community Support (letsencrypt.org)
tag: @griffin