This is most probably a setup issue. Can you please:
- in CiviCRM, go to the extension setup screen and take a screenshot (no passwords are displayed),
- in CiviCRM, go to the Scheduled Jobs, find the Google apps sync job in the list, select View log, take another screenshot,
- in Google Apps, go to the Contacts app, click on Directory and take another screenshot (mask last names and any other sensitive info).
Then PM me these screenshots and I will try to figure out what's wrong.