Dns cluster Issues

I’ve setup master and slave. Records show up in slave to reflect master. I was advised on discord to use nslookup all servers because I wanted to assure my setup was actually working correctly. I just get a time out error, server can’t be reached.
Also records don’t update automatic, o have to issue v- command to update. I’m just wondering what else I have to do for setting up.
Could it be some port is blocked by my vps provider? Is there hestiacp firewall settings I’m missing?

I’ve followed all documents.

Thanks in advance.

There should be an cronjob running under the admin user:

14 */5 * * * sudo /usr/local/hestia/bin/v-update-sys-queue dns-cluster

Its there.