Tailscale addon fails to start

I was following this yt vid: https://www.youtube.com/watch?v=vDxmtRByXDY to set up Tailscale.

Everything went fine, I was able to connect to the tailscale url:port.
Then I set the following code into configuration.yaml and turned on Tailscale Proxy to be able to use the url without port.

http:
  use_x_forwarded_for: true
  trusted_proxies:
    - 127.0.0.1

Now, the addon won’t even start. When I start it, refresh the page, it is back to ‘Add-on is stopped’.

I would post the addon-logs but not sure what I can or cannot expose.

I tried updating HA and HA OS, did not work.
I tried removing the configuration.yaml update and turning off Tailscale Proxy and that makes the addon start again, but have to use url:port.

Any ideas?

EDIT: seems I don’t need it. Just updated the tailscale IP address as the default HA IP in the companion app and it works…

You need to go to Tailscale and at the bottom, under “HTTPS Certificates”, enable HTTPS. The video does not mention it.