Rotation not working on vive cosmos elite

[25thfloor]

Hi all, we are using the 3dsp package for unity (2020.3.27) together with the HTC vive cosmos elite (with base stations).

We countlessly tried all sample scenes provided in the package but we can't get any spatialized sound. We can hear the slightly the distance from the sources only when we actively move them, bu mostly we hear a strong doppler effect. Moreover we can't perceive any rotation of the sound scene.

If we make simple bare minimum scene in unity with a camera as listener and a dummy object as audio source everything works fine. When we move in VR nothing works probably.

Any points we are missing?