Not sure if anyone knows this (I got this from Kubeir group), someone shared this link to check your application status: . It's SO cool! It works! https://ircc-tracker-suivi.apps.cic.gc.ca/en/login
Now I know why I had my GU on Jan 31. It's because my Background check was completed.
I checked about this either, it works!!! Now i know my GU in Jan 31st means eligibility passed. My BG check have not started yet, idk why