Where can I find sponsor's details to sign-in ECAS. I have been using PA's details from GC key to check ECAS status. It just says "application received".I thinking you're signing in ecas with principal applicants details. Try sign in with sponsor's UCI and sponsor's details then you will see two sections. Sponsor section and principal applicant section. If sponsor section section says 'decision made' then it means your sponsorship is approved.