I'm looking in the Security section of the cPanel interface and I can't find SSL/TLS Status. Where is it?
In order to make SSL/TLS status available, you will want to ensure that the "sslinstall" feature is enabled for the feature list being used by the cPanel user account's assigned package. The change is made within WHM's "Feature Manager" module.
You will also want to enable the following option within WHM's "Tweak Settings" module:
"Allow cPanel users to install SSL Hosts."
Making the above changes should resolve the noted error.
The following cPanel/WHM documentation for these two WHM modules is also included below: