I sent my documents on 26th September 2018 and they sent e-mail on 28th December 2018 that they received my documents. After that I tried to link my application to my online account, but I am not able to do that . E-MAIL what I received is AOR? Or do I get any other communication.If your application is complete then you should receive your AOR late to late by 90th working day.for the info on the working days in Canada kindly follow the below mentioned link
http://www.workingdays.ca
Hope this helps and wish you all the best