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You can't stake without encrypting your wallet.

But I only have 100.000 on it, not 30.000.000

when you have any wallet, you must have a password for that wallet once you open it.

Not with this one. It opens without any password...

any wallet opens, but for your safety to have password

ok, then 'encrypting' is what I have to do?

If you have money, withdraw to exchange as encryption will loose your money.