It says in the docs, that you can setup a SSL certificate for the control panel like this:
v-change-sys-hostname host.domain.tld
v-add-letsencrypt-host
But which user do you need to access the CLI with? I have a root user, my own standard user. And then two hestia users. I tried to SSH to the hestia admin but it told me it only accepts SFTP connects.