I often have a problem running Lightning DS playback. After trying to start the song from Qobuz I get the message: “Unable to play selected streaming track”. The problem disappears when I switch to Streamer Setup Streaming Quality from FLAC up to 384K on FLAC up to 96K. I had it with Altair and now I have with Vega. According to me, streaming from Qobuz should work with 384K.
Try logging out from your Qobus account completely after you have made changes. Then log back in again.
Qobus often needs a logout/login for me to, with the same message.
I have already tried logging out and logging in to Qobuz completely; the problem for some time returns again …