Cloudfare Zero Trust Tunnel : Error 403

I exposed my Home Assistant (Proxmox VM) with a Zero Trust tunnel from Cloudflare. I can access the HomeAssistant VM from my PC without any problem from my domain name. But from the HomeAssistant app on iOS, I constantly get an error message:

Invalid HTTP response (403) for https://domaine.com/auth/authorize?response_type=code&client_id=https://home-assistant.io/iOS&redirect_uri=homeassistant://auth-callback.

Code d'erreur:
PromiseKit.PMKHTTPError 0

configuration.yaml

http:
  ip_ban_enabled: true
  use_x_forwarded_for: true
  trusted_proxies:
    - 172.30.33.0/24
    - 192.168.0.120
    - 10.0.0.2

Anyone ever had a similar message?
Thanks for your help

@fabxqaq I did the same today and am getting exactly the same error (in ios app).

I believe the issue is the app is being presented with a human verification page from cloudflare rather than the usual HA login page so it’s throwing up this error. I’ve had no luck either though yet !

Any news here, still having it, would really like to remove the VPN, and use cloudflare