I was asked to send my wife's passport copies - by email, which I did. Followed up after a week and they confirmed the receipt of the scan copies and indicated that they will reach out if anything else is needed.I see couple of people sent scan of PP pages by email (Mississauga). However they asked me to send color copy of pages via regular mail to Scarborough.
That is strange. sent it last week still no update.
So even in your case, they would have received it, but they don't acknowledge.