may be because of no VAS / vias office in Canada
you can go to USA and complete Biometrics . i dont think as a tourist any issue. just need to provide local address for stay just in case if they ask.
I think Biomatric for PR application is different then visa. (I am 99% sure) correct me if i am wrong.
your parents have to go for Biomatric for PR application ones IRCC ask you.
Ans 1: Biometrics not possible in Canada >> you can do it in USA if you have USA visa
Ans 2: yes Medical valid for 12 month. you can see your Medical exp. date when you link your allplcation into myCIC.
check in tracker link ...
as per tracker line # 54 have same issue .
Link: https://docs.google.com/spreadsheets/d/1B_YAyszLcUxbfe0ur7WPZRPJ0y2COpRJSt8Ce19yrhI/edit#gid=945174368
Biometric not required from all country.
Biometric is required for all Applicant. (not from All country)
May 10th got Ecas update. you have to wait few week more.
as per tracker Biometrics will be request first as soon as your application in process. (before Medical and PCC)
Example in tracker line #15
Link: https://docs.google.com/spreadsheets/d/1B_YAyszLcUxbfe0ur7WPZRPJ0y2COpRJSt8Ce19yrhI/edit#gid=945174368
Please tag @YULIA-2016 with listed information
Sponsored people
Parents Country of Citizenship
Prov
Invition Receive Date
Application received in Ottawa Date
All point have no any relation to speed up or delay PGP 2019 at this stage. It is random that what I said as per tracker.
You will see soon update in ecas.