Thank you for all your responses. Meanwhile I did more testing in trying to find a solution. Here is what I found:
If I play "Hi-Res" on Tidal, my Mark Levinson indicates a sampling rate of 48kHz on the display. Regular quality reads "44.1". So there must be a distinction between these two modes on Tidal.
I reset my node2 and re-configured it. Took me a while as this process is flawed, as far as I can tell. Anyway, I can play music from Qobuz, however some albums do not play at all (e.g. Pat Metheny, Bright size life). No matter what sampling rate I choose on Qobuz, even with "CD 44.1kHz" it does not play at all. And yes: I reset the apps to ensure that this sampling mode is on. Other albums either show 44.1 or 48 on the Mark Levinson display. Does that mean that this record only plays on the higher resolutions?
If I use the analog output of the node2 and connect it to the pre-amp I can listen to this album. So that seems to confirm that this album (and probably others) will only play with DACs that accept such high sampling rate. I guess I am out of luck with my ML.
Any comments or suggestions?