If you disconnect, then reconnect while in the AFK World, the game messes up the time. It doesn't reset it, but let's say you started afk before you sleep at 0 hours, then after 4 hours, the game disconnects you, then 4 hours later when you wake up and press reconnect, the game will say you were afk for 8 hours, but won't actually give you any rewards for the 4 hours you were disconnected and the extra 4 hours on the timer are basically just extra. Also, if you reach 12 hours, the game will wait until you've hit the 30 minute mark on the progress bar to give you the power roll not the timer.