Hello, I wrote that tutorial! :)
You tried browsing to
If you did, make sure you created the
panel subdomain in DigitalOcean, it was one of the prerequisites. If you didn't read: https://www.digitalocean.com/community/tutorials/how-to-set-up-a-host-name-with-digitalocean
If you've already done that, you can try setting the hostname for Ajenti within the Ajenti control panel. Go to your Ajenti control panel through either your IP or whatever domain you have set up, and in the sidebar, press Configure. Under the second section (HTTP Server) change whatever is in the Host text box to
panel.example.com. Then click the Save button at the bottom of the screen, and then click the Restart button at the bottom of the screen.
I hope that helps!
This article walks you through setting up the DNS for your site. The tutorial includes steps to set up an A records, point your nameservers, and provides some information about MX records.