It's a BOT not a BDP and it would not stay connected to the BDP. I think it had a component inside that had either corroded a bit or come loose. They just tidied it up a bit and it started working. Not sure if they replaced some pieces or not.
Full disclosure: I paid to have a shipped once before and they shipped it back and it still was having a problem. But it was during the hight of the pandemic and I think they squirreled out a bit on that effort. So I went back onto audiocircle and ask (kinda bitched actually) for help and thats when they came back in a got it done. By that time I had a much better understanding of the behavior and explained to them in details about what was going on with the unit which helped them isolate the issue.