Hi,I received the same email. I sent those in the email. The residential address and email was in the email body and PCC and passport as attachment. I also, requested details from IRCC web form to confirm and got the reply within 5 days that my documents were received. Here is the link for the ICC web form.
https://www.canada.ca/en/immigration-refugees-citizenship/corporate/contact-ircc/web-form.html
Thank you for your reply. Did you use the following email for document submission?
IRCC.CPCMParentsandGrandparents-Parentsetgrands-parentsCTDM.IRCC@cic.gc.ca
Thanks.