I have the same question. why does it matter to link with the GCKey? what's the benefit?I'm not sure why linking to GCKey is required ? Say I created a login at IRCC website ( https://prson-srpel.apps.cic.gc.ca/en/login ) with email id "foo@gmail.com" and submitted my PGP application online using id "foo@gmail.com". I don't understand when folks talk about GCKey. Why can't one login ( https://prson-srpel.apps.cic.gc.ca/en/login ) with foo@gmail.com and check the status ? Why do you require GCKey. Am I missing something here ?