I've entered from time to time to see if anyone would join and at some points there would be 1 or 2 joining and then leaving. However at some point I saw a friend in bomber royale and joined myself yet were in different instances. I'm not sure if it's a widespread issue preventing BR games from starting due to lack of people in all instances or just something that happened because the instance was inactive for so long. We entered solo.
Edit: also 2 of my BR wins don't seem to have showed up.