I didn't remember if this group was still a free group, or upgraded to Premium. Did a very quick search of messages, and It was upgraded, and Martin is one of the co-owners. Unless one or more of them turned off their group messages, or changed email address, all co-owners & possibly moderators should be getting the owners emails. And sooner or later, GIO is going to want to be paid again.
I think I'm going to do a Role Call of my groups, and make sure everyone is alive and responding. I was a member of several of James W. Early's MLXXXXXXX mini-lathe groups back in the Yahoo days when he passed away unexpectedly. There were no other owners, and no moderators with elevated privileges, Yahoo was not at all helpful, and the groups eventually died, too. We all lost a lot of good info, as well as a good friend and great resource.
I'd hate to see that happen here, though having had multiple medical problems with my wife and self in the past 13 years that I've been active on Yahoo and Groups.io, I can certainly understand how such things can happen.?
Bill in OKC