I seem to be having an issue with setting up Toggles for an Levoit air purifier, I have the Fan Speed, Sensors, and On/Off working fine.
When I setup a toggle to turn the units display on or off it reports the status of the toggle in google home (if i manually switch the display on or off it will light up the toggle accordingly) but if i actually use the toggle in google home the whole unit powers on or off as if the attribute is being reported as the default Switch attribute.
It looks like you have the display toggle's "control type" set as "separate on and off commands" on and off, when what you probably want is "single command with on and off values" with setDisplay as the command and on and off as the values.
Right now, it's looking at the correct state attribute to report the current state of the display, but it's using the main on and off commands, which presumably turn the entire unit on and off.