There are a couple of reasonable answers as to why your name dropped out of the HL list a short time ago, as I have seen this happen at my ohter hub many times and they are a) a glitch in Agora software and b) inactivity.

At my other hub, a HL dropped out for no reason for a few days and she had thought someone ousted her, and asked me what happened. I suggested "a" and to contact Agora, and it was "a" and they put her back.

Since you came back and posted, you were reinstated...so maybe it's "b."

Anyway, no harm done and looking forward to your contributions here once again.