Ok, from what you are saying you do not meet the criteria to access P4 on the on the 16th. You need to go to the beta registration page when it open back up on the 17th and apply for access to P4. Then you should get your Phase 4, 12 digit code PS3 emailed to you.
Here is a recently posted, poorly translated quote:
but when the open Beta entry page opened on 17 August Please perform the registration of the PlayStation ® 3 again.