Awesome, this is the way. PS - If editing plist.info directly the value for the key is the usual 'true' or 'false'.

I was able to resolve the issue in my case, by adding "App Uses Non-Exempt Encryption" to the Xcode project Info.plist I had been just clicking the 'manage compliance' link that would be shown by every build I uploaded, and that had always worked fine. As soon as I added the "App Uses Non-Exempt Encryption" key & value ('NO' in my case) to info.plist, the next build I uploaded to App Connect was delivered within a couple minutes to TestFlight.

I was able to resolve the issue in my case, by adding "App Uses Non-Exempt Encryption" to the Xcode project Info.plist I had been just clicking the 'manage compliance' link that would be shown by every build I uploaded, and that had always worked fine. As soon as I added the "App Uses Non-Exempt Encryption" key & value ('NO' in my case) to info.plist, the next build I uploaded to App Connect was delivered within a couple minutes to TestFlight.

Any luck, or still having the same problem?

Did the issue resolve itself, or are you still not able to see new builds in TestFlight for internal testers?