I have a new MacBook Pro 2020.
I'm from Poland.
On the login screen when you start VoiceOVer speaks English.
In my previous MBP 2013 he spoke Polish.
Can you change the language somehow?
I'm not sure specifically about different languages at the login prompt, but I know that if FileVault is turned on, VoiceOver behaves differently and may not respect the same user settings.
Do you know what language is spoken after you log out of your account without shutting down or restarting your computer? If it is Polish, I'm guessing the FileVault prompt at initial boot doesn't support that language and thus you would need to turn it off in order to get a prompt in Polish.
Comments
Is FileVault on?
I'm not sure specifically about different languages at the login prompt, but I know that if FileVault is turned on, VoiceOver behaves differently and may not respect the same user settings.
Do you know what language is spoken after you log out of your account without shutting down or restarting your computer? If it is Polish, I'm guessing the FileVault prompt at initial boot doesn't support that language and thus you would need to turn it off in order to get a prompt in Polish.
HTH