Getting certificate for Windows UniFi Controller

Getting an error with the wacs.exe tries to dial in.
[uni.hugollc.com] Authorizing...

[uni.hugollc.com Authorizing using http-01 validation (SelfHosting)

[uni.hugollc.com] Authorization result: invalid

[uni.hugollc.com] {

"type": "urn:ietf:params:acme:error:connection",

"detail": "Fetching http://uni.hugollc.com/.well-known/acme-challenge/QegQ5HTHCZAX6k2DMdkSCG5LlcRTXj6E1uVIpk3VEpq: Timeout during connect (likely firewal problem)",

"status": 400

}

I have confirmed that port 80 is opened on the VM and forwarded, but I'm guessing the Java webserver isn't listening? Should I redirect incoming requests on port 80 of the public IP to port 443 of my VM?

I found this post which seems to address using 443:

But I don't think those are Windows clients.

Is there documentation on manually/automatically updating the DNS-01 challenge?

P.S. I also made sure to open the firewall on the Windows Server, specifically for port 80.

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