I got the email at 1st Dec as well, supposed to have and telephone interview between 9:30~12:00 today, but I got a call just now (at 7:30, 2 hours earlier and I was still sleeping....come on this is not as you said in the email, I already consider the time difference between Montreal and Vancouver), and I haven't received coPR yet...
The lady told me to mail back the document once I have it, and someone will contact me for reschedule, but this time it won't be an express landing, but a normal procedure, which means I need to go to the border, do process like everyone else.
I still don't get why they make this so confusing...it just costs me another two weeks of waiting, let alone christmas holidays are coming, gosh I wish to get it done before holidays so much...
Are you in different time zone when compared to the time zone from where interview will be held(can be determined based on email that was sent to you)