App Store Connect - Can't see my app rejection issues in TestFlight

I uploaded a build of my app to App Store Connect and submitted it to a group of external testers in TestFlight (without submitting to App Store). The build status goes from "waiting for review" to "rejected": The problem is that I didn't received the "Unresolved issues" or reviews. I searched in every page and can't find it. How can I see "Unresolved issues" of a build in TestFlight only?