Questions about Hyperdrive Gen2 18-in-1

I have had this Hyperdrive since the Kickstarter campaign. Basically, I think it's a good product, it does what it's supposed to do. Unfortunately, there is something wrong with the sound output. I recently got a new amplifier at my workplace: the NAD d3045, as an upgrade to the 5.1 Logitech kit. When the NAD receives the audio data via SPDIF (whether coax or optical), the sound is choppy and partially distorted. When I feed the NAD from my other workstation via optical SPDIF, everything is fine. So it is clearly the firmware or worse, the sound hardware of the Hyperdrive. NAD has confirmed this to me. Since 3.1.22, Hyperdrive has not responded to my support ticket. There is also no firmware download on their site.

Hello all Can anyone tell me which is the correct power supply for this docking station? Thank you!

Does the power supply that delivers the 100W of power come with the product? If not, which power supply should be purchased separately?

Hello everyone, I need help please ;-) ... I have a Microsoft Surface Book 3 and would like to run 4 screens (i.e. independently of each other, not 4x the same display, but expand screens). I still have the docking station on the Surface, so theoretically 3x USB-C outputs (1x on the laptop itself and 2x from the docking station). The screens are LC-Power LC-M27-QHD-144-C (4x). Which adapter do I have to buy to get the whole thing running? Best regards and THANK YOU THANK YOU in advance for the answer, I'm almost desperate ;-)