My Home Speaker 500 will not play any presets by voice command using the Google Assistant. I have the same problem with using voice commands for playing radio stations via TuneIn or playing music via my linked Deezer account. It says that Deezer/TuneIn are not supported with the device.
Given that one of the reasons I purchased this speaker was the compatibility with TuneIn/Deezer/Spotify I am surprised that they are apparently not supported.
Youtube music is also unsupported but I would like to make a feature request that it is added.
I can use all of the compatible services via the Bose Music app and use Airplay from my Apple devices, but cannot use any voice commands for them.