Gitlab failed to certify two factors for too long.

1. Verify that the two-factor authentication settings are correct. In GitLab user settings, check and change the two-factor authentication settings to ensure that the mobile phone number is entered correctly and associated with the GitLab account.

2. Confirm whether the mobile phone receives the verification code sent by GitLab. You need to check the settings of the mobile phone, whether the flight mode is turned on, and whether the SMS function is occupied by the application.