Can't access Webmin from browser after installing

Fresh Webmin install on Ubuntu 20.04 on Amazon Lightsail * I added the line to iptables as per their instructions:

sudo iptables -A INPUT -p tcp -m tcp --dport 10000 -j ACCEPT

* I have added port 10000/tcp to ufw also. * When I go to the browser https://myip:10000 the browser stays loading for a while then says:

cant open the page because the server where this page is located isn't responding

What am I missing? **Edit:** When I run sudo service webmin status I get this:

● webmin.service - LSB: web-based administration interface for Unix systems  
     Loaded: loaded (/etc/init.d/webmin; generated)  
     Active: active (exited) since Thu 2021-02-04 00:52:06 UTC; 55min ago  
       Docs: man:systemd-sysv-generator(8)  

Feb 04 00:52:05 ip-172-26-4-221 systemd: Starting LSB: web-based administration interface for Unix systems...  
Feb 04 00:52:05 ip-172-26-4-221 perl: pam_unix(webmin:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= user=root    
Feb 04 00:52:06 ip-172-26-4-221 webmin: Webmin starting  
Feb 04 00:52:06 ip-172-26-4-221 systemd: Started LSB: web-based administration interface for Unix systems.  
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