Unable to install app through TestFlight

End of last week I found the build on TestFlight marked as expired even if the evaluation period was not ended. I created and uploaded a new build, it is listed in App Store Connect, but I cannot assign tester groups (when I try I get an error message). Also, I'm internal tester but when I try to install the app using TestFlight I got error "Cound not install [app name]. The requested app is not available or doesn't exists".

Unable to install app through TestFlight
 
 
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