Adjustment of Status - I-485

Hello Friends,

I am a silent visitor of this site and thank you one and all for taking your time and sharing your experiences. I request your inputs and guidences in my case too. I came to USA on student visa in march 2015. registered for masters course but could not able to cope up to the standards and subsequently got out of status in FEB 2016. But in mean time i met a USA citizen online in christian dating site 1 year ago and decided to marry. We married in March 2016. And applied for my AOS. As we dont have enough money to brought Apartment we decided to apply for AOS and then take Apartment to movie in together in Sept 2016. So we have applied for our AOS on 26th July 2016.

uscis recevied our Documents on -28 th July
received email notification on 5th Aug for all 4 applications with numbers
But we only received I-79c notice for i-130

Here my concern is We both have 2 different addresses as if now , and we are moving together this sept 9th. She is in California and me in Chicago right now. but today when i checked in USCIS website for tracking it was mentioned like this " Notice Was Returned To USCIS Because The Post Office Could Not Deliver It
On August 23, 2016, the Post Office returned a notice we sent you for your Form I-131, Application For USCIS Travel Document, Receipt Number"

Please let me know your inputs as i am confused , does other notices for travel doc, employment card and i-485 was mailed to my address in chicago? and failed to deliver? As how come she was able to receive only 1-131 notice but not other. right now we are giving my wife address to request a copy of the notice and after we move in to Apartment on 9th Sept , change our address.Please let us know this delayed my Bio metric appointment as we not even received any text/email notification about it.