Restrict room creation to only admins

I am trying to restrict room creation to only, say admins, by following this:-

Finally, when I run this
“./jicofo.sh --domain=jitsiexamplecom --secret=focus_secret --user_domain=authjitsiexamplecom --user_name=focus --user_password=focuspassword”

I get these errors:-

SEVERE: java.net.ConnectException: Connection refused (Connection refused), host:jitsiexamplecom, port:5347
org.xmpp.component.ComponentException: java.net.ConnectException: Connection refused (Connection refused)

SEVERE: Failed to connect/login: The following addresses failed: ‘jitsiexamplecom:5222’ failed because: jitsiexamplecom/155.138.160.233 exception: java.net.ConnectException: Connection refused (Connection refused)
org.jivesoftware.smack.SmackException$ConnectionException: The following addresses failed: ‘jitsiexamplecom:5222’ failed because: jitsiexamplecom/155.138.160.233 exception: java.net.ConnectException: Connection refused (Connection refused)

Any ideas how to fix this? Thanks!

(NOTE in the above command and error messages, I could not put DOTs in URLs, as only two URLs are allowed by new users)