I changed the domain names in digitalocean droplet. I removed the old domain name from my droplet. I added "ns1.digitalocean.com " etc to my name cheap account. I even changed the /etc/hosts and /etc/hostname file in my console. Still my website is on the old domain name and my new domain name shows “Welcome to nginx!”
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It may take a while until DNS record are updated. For namecheap it’s within 48 hours.
Also, The other DigitalOcean name server are:
ns1.digitalocean.com ns2.digitalocean.com ns3.digitalocean.com
In the meantime, you could run dig <your domain name> to see if your domain has successfully pointed to DigitalOcean.
My website is now gone from my old domain name but still doesnt show up in my new domain name