Close all covers on floor not working (turn off all lights works)

Is there an option to close all the covers on a floor via voice command?
I can close covers by saying “Close blinds in room X” and I can also turn off all lights by saying “turn of the lights on the ground floor”.
But saying “close all the blinds on the ground floor” results in the message:

Sorry, I am not aware of any area called ground floor

Here is the screenshot of the conversation in german:
image