Pls double check:
Link is:
https://services3.cic.gc.ca/ecas/authenticate.doIdentification type: Immigration File Number
Identification Number: BXXXXXXXXX (no spaces)
Also do u have 2 file numbers? Try the file number u got from your local CHC, not the file number in Sydney AOR.
In the past, did u click on " Please remove the ability for me or anyone else to view the status of my application on this Web site." and submit?
If its still a mystery, contact them to get it resolved.