Those one that didn't receive yet AOR I recommend you to call CIC and ask for your application, since I have read at the forum that people that did send documents to CIC on JUNE 2015 waited for three months and when they did not get the AOR they called CIC and asked for their application, some of them after 10 days after the call got AOR.
I send my doc's to CIC on 30/07/2016 and CIC received them on date 04/08/2016 and I'm going to wait until October after that I'm going to call them, it is my right to know what happened with my application, maybe they send back the application and Post offices did through application in junk.