Synology camera won't stream to Google Home

Hi all,
I’ve a cheap AliExpress camera on the baby’s room. Works fine.
I’ve setup my Synology with SurveillanceStation and add the camera, works fine.
I can see the camera in Home Assistant and I can configure a picture card and stream the camera, works fine.
I’m connected with Nabu Casa, so with Google Home Integration.

I’ve a Google Hub and ask: Hey Google, stream the camera of the baby room.
Google reply: Ok, I’m streaming the camera of the baby room.

Then a blue screen appear on the Google Home with “Welcome to Home Assistant”. Nothing happend after that message. No camera stream.

In Home Assistant webpage it works fine but I want to stream to the Google Home.

Any idea?