There are at least a couple of us having the red light issue. I describe what happens.
I use my BR-20 exclusively with Roon. When I first select Roon Bridge and enable the BR-20 in Roon, things work as expected (for a roon bridge application). I put my BR-20 in standby when not in use. When I turn it back on, I have to enable the BR-20 in Roon.
After about 10 days of use as above, when the BR-20 is powered up, the lock light flashes red and continues to do so indefinitely. I can still stream from Roon. But the lock light nevers stops falshing red. If I unplug the BR-20 and plug it back in, it resets and the lock light is then green when streaming. After 10 days or so, back to flashing red.
As I said, I am not the only one having this exact issue.
thanks for you help.