It says in order for staking to work the QT wallet needs to be unlocked but whenever restarting the wallet it becomes locked again.
How to make it unlocked always even when closing the wallet?
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You keep the wallet open and do not shut your computer off. Staking works on time and not whether it is off or on. When you unlock it then you get reward if you meet the time limit for staking. However, it never worked for me and I kept my wallet on unlocked all the time with 72 bcc coins for almost 2 months and the staking reward was almost nil to nothing. Coins at the time were worth each $350-$410 per bcc +/-.