The device is temporarily unavailable
In case you have lost your device, you can use the Google Authentication Desktop on Windows to access your account by using WinAuth (PC Window)
If your 2FA password is wrong
If you are sure that you fill in the correct 2FA password from Google Authentication and still cannot access, it might be because the Authenticator is not properly synced. Or time does not match the current device or wrong time zone. If this is the case, try resetting to the current time or select your device's time zone to match the country of residence.
If the initial steps are not successful. Please try the following steps. *** This may require another device.
You can try moving Google Authentication to another device and get a password to the account from another device. Please click here to see how to move 2FA Authenticator (First paragraph.)
If the process is successful. You may now move back to the main device immediately.
If you lost or cannot access the device