Hey, Talya.
I applied Concordia University on 4 September. And I send all the documents which got received on 9 September. And got my offer letter on 6 October. Don't be too worried because Concordia University will take around 1-2 week to show any changes on there portal. In my case the courier company was showing that they have given courier on 9 September but my status on portal got changed on 25 September that the file is completed and it is moved to department.
And regarding Recommendation letter, I only send my sealed recommendation letter from my professors along with all my documents in courier. I didn't submit any assessment form. I think you have to submit either reference letter or assessment form. But still ask with Concordia University on portal, they will definitely reply you.