I’m guessing you got you passport request on the email they sent there is a link to the web forum to email a request to submit your passport to where you currently live. They will respond to your u within 5 days with instructions on what to do. However, if you currently reside in the USA you will have to send your passport to Ottawa most probably. This was on my ready for visa email. If you
do not have a mailing address in Canada or the U.S.A, or if you are
unable to submit the required documentation for you or your accompanying family members to the addresses below, please advise
IRCC via the
IRCC Web form for instructions to submit your documents to the visa office that serves the country where you are.