Earlier it said : " Your application is in progress. We will send you a message when we start your background check."
Now : "We are processing your background check. We will send you a message if we need more information."
App. Filed.......: MARCH 13, 2017 Received MARCH 14, 2017
AOR Received.: March 28, 2017- SA 3/30/2017
Med's Request: April 10, 2017
Med's received : April 20, 2017
Ecas In process : May 30, 2017
AOR2 : June 5, 2017
BGC : September 28 , 2017
In most cases PA will receive an email shortly from NDVO regarding the docs they need , could be any document (mostly for verification purpose) . This at least show that the file is moving ! hope you get your PPR soon :)