Getting a reverse proxy to work on home assistant with homeaccessanywhere.com

I have home assistant installed in a virtual box on Kubuntu. The networking is bridged, so the VM gets a local IP address. Through the HA app store, I installed an app called homeaccessanywhere.com You sign up, get your token and subdomain, and then enter those into the app on HA and your are done. You can access your HA server from anywhere in the world.

So for example, my URL would be example.homeaccessanywhere.com I use this instead of duck dns, as I could not get duck dns to work.

The problem I am having, is I installed a wiki called bookstacks onto HA through the App store. I can get to the wiki with a local ip address and port of 192.168.50.203:2665

I am not able to access the wiki outside of my local network. I have tried using: NPM, Nginx Home Assistant SSL Proxy, Caddy. I even looked at: https://github.com/Pulpyyyy/multiappproxy

All apps that can be installed through the App store of HA, though some are custom git repositories that have to be added. I have not tried apache, as that is beyond my skill currently to modify what is needed.

I even tried adding the below to my configuration.yaml

homeassistant:

external_url: https://YOUR_SUBDOMAIN_HERE.homeaccessanywhere.com

internal_url: http://YOUR_INTERNAL_HA_IP_HERE:2665

Does anyone have any ideas? What am I missing? I am unemployed (looking for work), so purchasing stuff, if I have to, is going to be very very difficult.