AOR is for applications submitted by paper. Since you submit you application with the express entry process your AOR would be the pdf you got just after submission. Just continue to watch your express entry profile for updates. Also keep in mind that the comments you are seeing are for paper applications and not express entry
Oh thanks .. that's why i too got confused with all these statuses. Could you please let me know in which i thread i should follow for express entry.
Thanks for your comments.