After receiving the "Ready for Visa" email from the Case Processing Centre (Ottawa) of IRCC, I followed the instruction to send all required documents (i.e., a scanned copy of my passport, two photos, the completed Annex A, and a pre-paid return envelope without any address filled in) by Canada Post. The IRCC finally approved my PR very quickly. Then I kept tracking the return envelope everyday. I suppose it should be my CoPR. Last Thursday the tracking system showed "Delivered" but I have not received the mail up to now. I contacted Canada Post. After investigating my case, they said they can't locate the mail now. I then contacted the IRCC for advice and was told that they can't do anything until next Tuesday. Is there anyone here having got a similar experience and being kind enough to share a bit? What shall I do now? Just wait? I wonder how many days one is normally given for landing. I also wonder what instructions the IRCC normally provides in the CoPR. Now I even don't know whether it's because the IRCC put a wrong address on my return envelope or because the Canada Post simply delivered the mail to a wrong place.