We are having this issue as well. Trying to install from previous builds also fails with the same error.
Looking in the console logs I found this:
TestFlight Install Request Completed (status = Failed): { bundleID = , appType = 2, version = , currentTaskStatus = 22, previousTaskStatus = 9, installStatus = 0, reachedTerminalStatus = 1, reachedFailureStatus = 1, reachedCancelledStatus = 0, percentComplete = 0.000000, userFailureReason = <TFError: 0x281ab1560>: errorMessage = The profile can’t be installed. Try again., code = -1, serverCode = 605, serverFailureReason = Error Downloading Install Data, persistentIdentifier = 0, installID = (null) }
mikejonesguy
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This issue appears to be resolved as of a few minutes ago. I was able to install the testflight builds that I've been trying all day.