Did you get it figured out, @moveit56 and @Mao? I haven't got any rights to modify most user groups (including manually adding you to emailconfirmed) as a sysop, unfortunately, so there's probably not much I can do about it myself if that's the issue, so help from somebody on the administration team with appropriate access rights would be much appreciated.
PS: Which page were you trying to edit?
And thanks, @Alley! It seems like that may indeed be the case, now that you mention it: After looking through Recent Changes and the user creation log, it doesn't look like any of the user accounts created over the last few weeks have made any edits nor are any of them in the emailconfirmed group, so that being the case would make sense.