if you're on 7.5.8, it doesnt matter what you input in to the settings box. 7.5.8 has a bug where the maximum will always be just 7 days - no matter if you tell it 30 days or 365 days.
Are you running 7.5 8 or 7.5.9? Your sig seems to say that you're on the bugged 7.5.8 version
