Another Random FAIL: Roon Server suddenly can't see MacBook after Four Years

Just reporting another random Roon failure - pretty much a daily occurrence around here. Roon Core suddenly can’t see the MacBook I’ve been using to run Roon for years. Rebooted both, didn’t help at all. Yesterday it stopped streaming in the middle of a track several times. Last week it abruptly FORGOT the queue I had spent about an hour setting up. I no longer recommend Roon to other people. If anything, it’s LESS reliable than it was five years ago. I’m pretty disgusted with it, but I have too much data entered to switch now so I’m stuck with crappy software.