Google Authenticator Verification Error
Due to time mismatch between mobile device and server, Google Authenticator may not work properly. This issue can be resolved by resetting your mobile device time. Please refer to the following for details.
Select "Settings" on the Authenticator app
Select "Time Correction for Codes"
Click "Sync Now"
iOS (Apple iPhone)
Select "Settings" on the iOS application menu
Select "Date &Time"
Enable "Set Automatically"