Letter of Reference - You must sign 3 letter of reference from professor ( minimum 3 copies from each ). Upload Scan letter of reference to student portal & better if you courier then all your docs i.e LOR, all mark-sheet result true copy, transcript, etc.
UOIT have their own LOR, you have to download from UOIT letter of reference and you respectively faculty have to fill it up and then they have to mail to UOIT from professional id ( not @gmail.com,
@yahoo.com).
As soon as they get your LOR they will send email to your respective faculty asking about your profile in college, how they know you and all.
Courier then after you get your student id and password i think it would be better. Courier will take 4 days. Your transcript should be sealed in envelope
SOP - 2 pages max
Concordia university will take time in discussion making. I have applied on 5th May 2018 for January 2019 master's program and i got conditional acceptance on 17th Sept 2018, still i am left to receive my offer letter, they said they will send soon.