He might mean that the Supporter perks only work if you have Supporter as your display group. Meaning you have to be wearing the Supporter userbar to avoid advertisements. Something similar to that used to happen to me back when Supporter first came out but I am not sure about now.
I am considering not bringing the bans page back, it is not really needed any longer. If you go to any banned members profile and hit the MISC tab you can reveal their ban reason. I do not see why anyhting else would be needed.