I think you need to follow the instructions which are in the biometrics requested letter/emailHello all,
My spouse was asked to pay for biometrics and submit it here.
I don't see an option that says biometrics!
if anyone has done this process please help me. Also would it be necessary Mohave a printer ready once I pay online? Thanks
here is the link:https://secure.cic.gc.ca/enquiries-renseignements/canada-case-cas-eng.aspx.
Anyway you can check the following page also
https://www.canada.ca/en/immigration-refugees-citizenship/campaigns/biometrics/how-to-give-biometrics.html