Captive Portal change default port number for HTTP?

[mibsy]

One of my users was complaining they couldn't connect to the wireless guest network with their Kindle Fire HD (version 10 I think). I spent over an hour troubleshooting and pulling my hair out. Finally, between Tcpdump and using portquiz.net:8000, I was able to figure out that on that particular version of Amazon OS port 8000 is blocked on the device. The redirect to the Opnsense Captive Portal on port 8000 never leaves the device and there isn't a known way to change that behavior on this specific Amazon configuration.

So, what I want to do is change the default port number of the captive portal. I can't find a way through the web GUI to make the change (I have created a configuration that is not active and activated the second configuration so that the port is now 8001). My goal is to set it to something like 8080 and I don't have the desire to create 79 unused configurations (I think the captive portal creates the zone number starting at zero and adds one each time). The zone number seems to be added to the default of port 8000 to set the config for that particular zone/captive portal.