Having the same frustration, I wrote elsewhere on this (an older post; Qobuz - playlists - #6 by Tidgee), strangely when I wrote that, the limit seemed to be 1500 tracks but noticed in last few days I am down to 500 now (utterly crazy & not what I would expect). The only ‘work around’ I found is to Bluetooth from the phone app but of course you then loose quality and are not bit perfect anymore, and doing this negates bothering to have high-end audio streaming or Volumio for that matter (just saying). Here’s hoping this is remedied soon…