Have you responded to the email that sent you confirmation of receipt when you applied? At the bottom, it should say:
Should you have any questions, please do not hesitate to contact us by email at
IRCC.ATIP-AIPRP.IRCC@cic.gc.ca.
Sincerely,
ATIP Officer
Immigration, Refugees and Citizenship Canada
PLEASE QUOTE OUR FILE NUMBER IN ANY FOLLOWING CORRESPONDENCE
We emailed that and notes came in shortly after. You need to keep sending them reminders otherwise your file may be stuck. It applies to every stage of application.