Live stream with onvif camera

I have an imou camera configured using Onvif, the camera is recognized and working correctly (real time streaiming) in the Onvif entities.
I also installed go2rtc and the camera is found both in onvif and home assistant
when i try to add the camera to a card the stream do not autostard, i tried this:

entity: camera.telecamera_soggiorno
show_name: false
show_state: false
tap_action:
  action: more-info

in which the camera is shown and updated every some seconds (if i click it opens a popup that streams live)

and also this:

type: custom:advanced-camera-card
cameras:
  - camera_entity: camera.telecamera_soggiorno
    live_provider: ha
    go2rtc:
      stream: rtsp_cam
      modes:
        - webrtc

live:
  auto_play:
    - visible
  preload: true
  lazy_load: false
  audio: false

i configured rstp_cam in my go2rtc config to point to the correct onvif url (and the camera streams from the go2rtc panel)

In this case the card start, but hangs after a sec and if i want to stream i need to click it

Any suggestion on how autoplay the stream in a card?