If your COPR was issued before 18th March 2020, you're free to travel. Otherwise, you need an authorization letter.
Apologies for the rather silly question. I might have missed this major update while I was traveling.
My CoPR was approved prior to March 18, 2020 and it expired in May 2020. With what you mentioned, does that mean I can book a flight and complete the landing procedure? I thought we had to wait for IRCC to give us permission once we're ready to travel.
Secondly, I got married last month. With my expired CoPR, I requested IRCC to add my spouse, but they've been providing vague responses. Do you suggest spousal sponsorship as the only way to go about it?