I decided to go through the tutorial from Digital Ocean and it works! Thanks guys.  I got a domain name from dynu.com as well which I pointed towards my Helios Ip address as a A record.    Now, I struggle to get a SSL certificate with Let's Encrypt. It says "no valid IP addresses found" I am following the commands from Digital Ocean Tutorial.   I do manage to access my NextCloud account on Safari despite the warning. Chrome on the other hand does not allow it. 
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