If you guys know where he lives, like a country or city, did you check the news there to maybe understand a little of what could have caused his absence?
If it's not on the news, it's most likely just a personal event.
Tried that, no very relevant news. I'm assuming he got too busy with his work to keep working, but dunno... As I said, I hope he does alright, and I'm thankful for all his hard work.
