"This wallet is currently locked. Access to protected data is not allowed." means that you have entered the wrong password too many times in a row. eWallet has an option to lock the wallet after this happens to help prevent someone getting into your wallet by using a program to make repeated password guesses. You may have set this option.
After the period of time time you've set using the Security Options has passed, you can again make an attempt to unlock your wallet file. The default is 30 minutes, though you may have changed it.
To locate the Security Settings on your device, unlock your wallet, and choose:
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