Mine was received same like yours and haven't got anythingMy application was received on Nov 20, 2018.
I did not received my AOR, so I gave a call to IRCC (18882422100). I was told my application has not yet been processed and it may be by luck that people whose application was submitted later than mine have received their AOR.
I was told that they could only take an action if my application was received before October 9, 2018. Also, they gave me a temp application number and suggested me to wait.