Try linking it with your UCI and passport.
I am not going to post any screenshots but the email says this:
This message is sent via an inbox that does not receive messages, please do not reply to this email.
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Dear Client,
This email is regarding the Immigration, Refugees and Citizenship Canada (IRCC) Application that you submitted to XXXXXXXX.
Attached please find a letter related to your application. Please fully read the attachment and save this message for your records.
The attachment is formatted as a PDF file. In order to open and read this file you will need a program capable of opening .PDFs. One such program is Adobe Reader, it is free to use and available at the following link:
www.adobe.com/products/reader.html