We recently discovered that our internal testers and external testers cannot update our new preview application.
We use the developer initialization file to sign the binary code. The preerelease application can be verified by itunesconnect. It can be successfully sent to the application. Than our testers tried to use TestFlight to update the application. They clicked the Refresh button next to the application icon in TestFlight. TestFlight never ends its work. The circle of progress will not be completed.
Version: TestFlight Version: 1.0.2 (55), XCode Version: 6.3 (6D570), iOS Version: 8.1 (12B411) and 8.2 (12D508) and 8.3 (12F70)
We tried the 3G network and the WiFi network. We tried using all the Apple IDs in TestFlight.

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