If the Google 2FA code is invalid, it may be caused by the following factors.

1. Please ensure you enter the 2FA code for the correct account if multiple accounts 2FA bound to one phone.

2. The Google 2FA code is only valid for 30 seconds, please be sure to enter it within 30 seconds.

3. Please ensure the time of Google Authenticator App on your phone is synchronized with the time of the Google server.