[Tim_Rocks]

v5 was blocked for trials only and during the disconnection a popup is displayed to notify them. The reason it's being blocked is because current hacks only work on v5 (correct me if I'm wrong?) and by blocking v5 for trials we are decreasing the hacking that goes on. Players wouldn't want to risk their own accounts, obviously, so they use trials.

Best guess though, that's the only reason I'd want v5 removed.