When I try to authorise Spotify user while Desktop app is running. it won't redirect back to my app. Must need to change playback device in order to work.
You'll likely need to stand up your own token swap server if you aren't already. This allows you to authenticate without needing to call authorizeAndPlay.
When I try to authorise Spotify user while Desktop app is running. it won't redirect back to my app. Must need to change playback device in order to work.