Unable to access podman container on port 443 from internal network

Howdy y'all:

I'm not really sure how to phrase this questions to Google to get useful information, so I'll start here.

I have a nginx container hosted via podman. I can access the http (port 80) site just fine on my network, but I'm unable to access the https side. Interestingly, you can access the secure site from the Internet, as I have it running via Cloudflare. I just can't get to it from my internal network. I'm not sure why. I've checked all the firewall ports are open, and they are, and I've make sure my Ubiquiti router isn't blocking ports, and it's not.

I can't make tails of this and any help is greatly appreciated.

Regards