Did you try this one: https://ircc-tracker-suivi.apps.cic.gc.ca/en/login
Yes, many times, I always get the following error:
Correct these errors:
Incorrect or invalid information. Review and make sure it matches the information submitted on the Use of a Representative [IMM 5476] form or the Authority to Release Personal Information to a Designated Individual [IMM 5475] form. If you can’t create an account, it may be because your client’s application is not in our system yet.