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.

  use_x_forwarded_for: true

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…