Thank you for the information mantikos. I read on some other posts that applicants are receiving mail before getting text or email notifications. So it's either their password expired due to the 90 days of inactivity or the tracker is not working properly. On the April Filers message board a lady reported that her info was up to date with the tracker but She got the letter first. So somehow the tracker is getting stuck!
06-25-13 - I-751 Package sent to VSC
06-26-13 - Package received and signed at VSC
06-27-13 - Conditional Resident Status Extended Notice Sent from VSC
07-01-13 - I -751 Receipt Notice received in the mail
07-10-13 - Biometric appointment notice received
08-01-13 - Biometric walk in successfully
08-22-13 - Email/ Text Case update. Case transferred to CSC
09-05-13 - Email/ Text Case update. Case transferred to local USCIS and then back to VSC