Laptop + docking station + soundbar doesn´t work

Hello,

I have a SB522A soundbar for dell monitors and it is connected to P242H monitor. Monitor has a build in usb hub in which this soundbar is supposed to connect. Hub in monitor is connected to docking station via dedicated usb cable. Docking station is Dell K20A001 model. Now when I connect my notebook to the docking station, soundbar doesn´t work. It is not detected by system (Windows 10), but status LED on soundbar is on, so it has power and seems to operate, just doesn´t appear as an output device and therefore doesn´t work. IT is connected to the USB SS port on the back of docking station

Do you have any idea what might be an issue? Thanks you :)