I called IRCC and was told that you cannot link your application using the Temporary File Number (TFN). They explained that once the responsible office reviews your application and confirms it is complete, you will be issued a permanent application number.APPLICATION REACHED TO IRCC ON 13th JAN 25
GOT TFN BY CALLING THEM AFTER A MONTH MAY BE IN MID FEB 25
WASN'T ABLE TO LINK MY APPLICATION UNTIL BIO MATRIC UPDATED IN MARCH
got approved in 4 days, after biomatric updated
Until then, it’s not possible to link the application to your online account using the TFN to check its status.