Spotify Free account support ?

[Paco777]

Hi,
Does this API works with a free Spotify account ?

I have switched my Spotify account from Premium to Free, and i cannot get this Sonos api to work anymore.
I'm trying to play Spotify playlists which is something I can do without any problems (as a Free user) with the Sonos app.

One problem might be that the play() method adds the songs of the playlist to the queue, which is probably not supported by a free account (which only allows playlists to be played randomly, and prevents tracks to be played directly, i think).
I suppose it should not use the queue, but do something like playTuneinRadio().

Unfortunately, I could not get anything to work with playSpotifyRadio() either.
When I run the sample :

     var artistId = '5WUlDfRSoLAfcVSX1WnrxN'
     var artistName = 'Sia'

     await sonos.office.playSpotifyRadio(artistId, artistName).then(success => {
       console.log('Yeay')
     }).catch(err => { console.log('Error occurred %j', err) })

I have displayed in the console :
Error occurred {}
and the Sonos app displays the following message:
Unable to play "Queen" - the associated service account cannot be found in your Sonos system.

Do I have to do anything special to play playlists/albums/artists from a free Spotify account ?