I assume you’re trying to create a domain record, and point it at your droplet. You have to do this on the networking tab, not on the droplets page; that’s how you change the hostname. Check out this tutorial on how to do that. https://www.digitalocean.com/community/tutorials/how-to-set-up-a-host-name-with-digitalocean

that was the instruction i was following. I finished step 1 and 2, and i double checked with my domain name company Namecheap that my setting was correct. Then step 3 just won’t go through. However, I never tested step 2. Do i just enter WHOIS into my CMD windows command line tool? It says it couldn’t recognize WHOIS as a command. Not sure what to do now. Please advise. Thanks.