well for AOR, I received an email.
I highly recommend keep checking your junk/spam too
or add donotreply@cic.gc.ca to your address book.
someone i knew had aor send in junk mail and she never checked and it went unnoticed for a week.
even in future... if one wants to make any changes.. i really don't mind.
i m really glad we all have this platform to share our experience and help each other.