P1 is when they send you the template asking for required info like Height, eye color etc. and P2 is when they send you login details to PR Portal where you submit declaration, add Passport photo and address and once you receive your ECOPR you will receive email from
ircc.donotreply-nepasrepondre.ircc@prson-srpel.apps.cic.gc.ca
This email is different from where you received your P1 and P2 email. The email will say congratulations your status as Permanent Resident has been confirmed and your ECOPR is available to download in the portal, then you login to your PR Portal and go all the way to the bottom after passing through declaration, address and Passport photo and your ECOPR PDF will be there and you can download it and use it for Health Card, New Sin number etc. until you receive your PR Card.