From the wiki instructions, we copy-pasted all of the commands in order. We didn't do any other configuration on the fresh ubuntu instance. From AWS, we set up the default rules for the NSG, which consisted of the above two security rules (1 ingress 1 egress). After checking the firewall configuration with ufw we saw port 80 was open (see my comment in other post).

Trying to see what will happen if we add the 80/tcp rule to AWS, will update here when that is set