What was your AR? Mine is from May, 2021 as well but no AOR yet.I just got 1 email that was payment confirmation. My application was submitted in May 2021. I got AOR too. As far as I know, People who submitted their applications between April-June last year did not receive the confirmation email after submitting their application.
It's all good as long as you see your applicaion being submitted on PR Portal.