I'm trying to screen mirror with AirPlay on my Hisense Google TV. In a video on YouTube, it looks like there should be an option for "Apple AirPlay and HomeKit" under Settings > System (see attached screenshot). This setting is not appearing in the menu on my TV. I tried running a software update, but saw a message that no update was available.

Are there specific models that don't support AirPlay 2? I haven't been able to find a list. Or is there something else I'm missing? Any help is appreciated!