On searching for information about this new error log, I found this WARNING Exception encountered while verifying pairing java.lang.Exception: Unknown user: ... every 75 sec - #3 by ndye and followed the instructions from yfre to find a backup HomeKit.json file with “user” in and use it to overwrite the current one. For now at any rate, that seems to have fixed things. But I’m not clear whether this was in any way related to the other problem in this thread. The bug referenced above looks like it was apparently fixed last year but it seems that it’s back.
