I sent mine on Feb 21st and didn't get an AOR, so I sent a webform asking them if they even received it, and here is their reply:
"
Thank you for contacting Immigration, Refugees and Citizenship Canada (IRCC).
We have verified the information you provided and can confirm that we received your application. It will be processed according to the date it was received.
When you submit an application to IRCC, verifications are made to ensure that the online application is complete and ready for review, which means that you have:
- Answered all of the questions on the form, and
- Submitted all the necessary documents.
Once we have verified that the application is complete, you will receive an acknowledgement of receipt. At the moment, we are unable to provide delays for how long this verification will take."