How to send a panel to Google Hub?

Hello, I’ve setup HA Cloud (still in the trial period).

I’m trying to cast a panel/dashboard to a Google Hub.

I’ve setup 2 scripts, 1 with Google Cast and another with DashCast.

Both setup with the public url for the dasboard (That I can access on my phone, outside of the internal Wifi).

When I run the script from HA page :

  1. Google Cast : I get “Home Assistant Cast requires your instance to be reachable via HTTPS. Enable Home Assistant Cloud or set up an external URL with valid SSL certificates”

  2. DashCast : The DashCast splash screen shows up in the Google Hub, but it never actually shows the dashboard.

Both scripts are added to an Area (read somewhere that could be a problem).

Any help?