Enter password to unlock your keyring

I am not sure what you are referring to. The user field on the login window is the correct way to set autologin.

If it isnt working for you then I would suggest you should reinstall to clear any odd configuration tries you have done.

Note. The keyring issue is expected … autologin bypasses the normal authentication and the keyring has to be manually unlocked.

You can set a valid keyring password via seahorse.