Wallet password in forging

Hello!
I downloaded MetaGate 1.18.0 to be able to use forging. I logged in MetaGate with my password. When Im in forging app and start forging with my MHC wallet it asks password again as it was said in manual. I typed in the same as for loggin in MetaGate. And I see "Incorrect password".
What did I do wrong?