Don't be to concerned if the tracker is stuck at 'With the factory' at the moment I understand there is an issue with updating at each stage, therefore this week my car was unconfirmed build week 33 and went from 'With the factory' to 'In transit' and is now built sat at Emden waiting for a boat!
Use the VW Live Chat they can confirm your provisional build week which will give you a good idea of when to expect build to commence!