@AdamAJP,

It's annoying as is anything that stops working but you do have an option you can use immediately.

Your MC200 is the only piece of kit at risk of obsolescence here. Your 818 will keep running just fine with Roon and Tidal if that is such a major issue right now.

You can do that on a trial basis for 30 days while you wait for further info from HQ.

You can then make an informed decision in due course.

PS I certainly would not be buying a QNAP now in the hope that it might work and importantly continue to work. I think the odds are stacked against that happening despite what some are finding right now.