- namecheap.com
Change your domain's nameserver (NS) records, at the domain registrar where your domain name was purchased, to Vultr's primary and secondary name servers:
ns1.vultr.com
ns2.vultr.com
Only these two nameservers should be listed for your domain at your registrar. Delete any other nameservers to prevent conflicts.
nslookup beezlebug.xyz ns1.vultr.com
dig @ns1.vultr.com beezlebug.xyz
https://www.nginx.com/blog/using-free-ssltls-certificates-from-lets-encrypt-with-nginx/