Google Assistant integration - cannot control covers - device not configured

Configuration
1

Hi,

I’m running a 0.99.2 hassio version on a rpi3. I already have the google assistant integration working and i can control lights.
I can also see the exposed cover in Google Home on my smartphone, but when i try to control it i always get the answer that the “device is not configured”.

my config for google assistant looks like

project_id: xxxxx
api_key: xxxx
expose_by_default: false
entity_config:
  cover.window_level:
    name: Window
    expose: true

cover.window_level is a FGRM222 Roller Shutter Controller 2

Any idea why this is not working?

Thanks in advance.