Thanks for the info.You cannot submit your documents in person at VAC. You have to send via courier and also pay VAC to courier your CoPR to you. Call the VAC for clarity.
PS You don't just send photos. You would also send, photocopy of biodata passport page, copy of PPR letter and info regarding your height and eye color
The letter says visa exempt applicants with online account can upload photocopy of passport page and the letter via online account so really the only physical thing I need to send is my photos. Now you mentioned it, I did remember having to include a pre-paid postage envelope inside the package when I initially applied, apart from they asked me to send directly to High Commission of Canada instead of VAC last time. I will see if I can call them and ask for clarify. Thanks again.