looks like the port forwarding on the router didn’t take, or your address is not resolving to your domain name correctly.
try:
confirm if your DNS is resolving correctly: ping your domain name it resolves back to your external IP Address. (may need to flush DNS records or try from a different system/location)
If DNS your Resolves
put the system into your routers DMZ (this will work around port forwarding can take out after and reset the forwarding if that is the issue.)