Adding a build to a group of tester doesn't work for me.
Steps:
- Navigate to itunes connect
- Click "My Apps"
- Click the app
- Click "Testflight"
- Click the name of the group (for me: "External Testers")
- Click "Build"
- Click "Add a build to start testing" (or click "+")
- Click the build to make available
- Click the button "Next"
A spinner appears & this spinner won't go away (& the build will NOT be made available to the group of tester)
Additional note: Chrome developer console shows an error message: "TypeError: Cannot read property 'feedbackEmail' of undefined". (I've made sure all fields, especially any email fields, for the app-build etc contain information)