I think you might be mistaken about that.? As far as I know, when a free group reaches 100 members, it just locks new members from joining.
?
True, but as I said, if it WAS Premium with more than 100, then it's locked by the system if a payment isn't made.? (If enough members are removed to get it below 100, then it should unlock.)? That could also be the reason that messages to +owner aren't accepted.
?
(I am a member of a group with 102 members, and messages still work.)