Thanks a lot. The thing is, I don’t want to send my original certificate by mail I am assuming that they will return the certificate with the passport, right? but still hopefully someone in this forum can share his/her experience. Thanks a lot!They accept by post for sure as i have seen posts mailing the application.
https://www.canada.ca/en/immigration-refugees-citizenship/services/coronavirus-covid19/passport.html#passport-resuming