Certificate for Hestia Control Panel

I have problem.
I will running this commands from ssh as root:

v-change-sys-hostname server-web.domain.tld
v-add-letsencrypt-domain admin server-web.domain.tld
service hestia restart

But if i download .crt certificate from /usr/local/hestia/ssl and view then “domain.tld” only … not contain subdomain.

I want build certificate for Hestia Control panel (port 8083) for accesing on subdomain (server-web.domain.tld)

How i can fix this?