Not able to configure Caddy server to use TLS with my domain name - webserver

Question

I already have pointed domain's A/AAAA records point to my server's IP address and I do see Caddy home page when I put my server's IP address in the browser but not with domain name.
Not sure if my Caddyfile changes are even getting reloaded.
Hit in browser:
http://10.20.30.40 -- I see Caddy home page when I hit my machine's ip address
http://www.mytekworld.com -- The browser just keeps spinning when I hit the domain name
https://www.mytekworld.com -- The browser just keeps spinning when I hit the domain name
sudo nano /etc/caddy/Caddyfile
# The Caddyfile is an easy way to configure your Caddy web server.
#
# Unless the file starts with a global options block, the first
# uncommented line is always the address of your site.
#
# To use your own domain name (with automatic HTTPS), first make
# sure your domain's A/AAAA DNS records are properly pointed to
# this machine's public IP, then replace the line below with your
# domain name.
www.mytekworld.com
# Set this path to your site's directory.
root * /usr/share/caddy
# Enable the static file server.
file_server
# Another common task is to set up a reverse proxy:
# reverse_proxy localhost:8080
# Or serve a PHP site through php-fpm:
# php_fastcgi localhost:9000
# Refer to the Caddy docs for more information:
# https://caddyserver.com/docs/caddyfile
--Reload caddy
caddy reload
sudo systemctl reload caddy --caddy.service is not active, cannot reload.
Firewall status:
Status: active
To Action From
-- ------ ----
[ 1] 22000 ALLOW IN Anywhere
[ 2] 80,443/tcp ALLOW IN Anywhere
[ 3] 8080 ALLOW IN Anywhere
[ 4] 22786 (v6) ALLOW IN Anywhere (v6)
[ 5] 80,443/tcp (v6) ALLOW IN Anywhere (v6)
[ 6] 8080 (v6) ALLOW IN Anywhere (v6)

Answer 1

This appears to be a DNS issue.
Make sure your A record looks something like this
A 10.20.30.40
If your A record is formatted properly please update your question with the DNS record and your DNS provider (Cloudflare, Netlify, Godaddy, etc.)