Once you get PPR you need to follow below steps (copied from some other thread) or you can check in VFS website. Even my university got listed last week waiting for PPR.
1. Email VFS to buy label and pay fees
2. They respond in 48 hours with a payment link
3. Pay the fees, screenshot\save the confirmation email VFS back
4. They send you the label in 48 hours with a packing list
5. Bring the label to a FedEx location with the required documents
6. It took me a week to get my passport back after sending it out to the NY office.
7. I received POE letter when my passport is coming back.
VFS :
https://www.vfsglobal.ca/Canada/USA/how_to_apply.html#temporary_documents
Option 2: By Mail