Ok thanks ill tru to do thatThe spouse in Canada can call the IRCC call centre to inquire whether the Sch A has been added to your file. They night take a few days to do that.
Since you did not create a gckey account before receiving the request for Sch A, you won't be able to upload it via Gckey since there wont be any request over there. For now you can also send it to CPC-M through the IRCC webform (Google it).
The "Acronyms/how to" section of the spreadsheet mention the steps for linking your app:
https://docs.google.com/spreadsheets/d/1zLM1Z1qOBPSwGS9DOfkPRpXY4sLWD6PBr2s5LSBmmfY/edit?usp=drivesdk