If your account appears locked, you may be having trouble with your login method. Try logging out first by selecting your profile on the top right and clicking "Sign Out."
Then try the "forgot password" option on the login page. If you don't receive a reset email, you likely signed up using Google authentication instead of a password.
In this case, try logging in with Google instead.
If you need to switch from Google authentication to password login, please request human assistance by clicking "Talk to a person."