you can not get the stake if your wallet is encrypted, i did not modify this mechanism

You can if you unlock your wallet by going to Command Line Banking and typing:

Code:

walletpassphrase Your_password_here Time_to_unlock_wallet_in_seconds_here

For example if my password was mypassword and I wanted to unlock my wallet for 24 hours (86400 seconds):

Code:

walletpassphrase mypassword 86400

Your encrypted wallet will then remain unlocked for 24 hours and be able to stake for 24 hours before locking itself again.

thanks