App Uses Non-Exempt Encryption = FALSE in your plist file. This worked for us as well. But since this does something entirely different and it was never required before, it must mean that there's still a bug in the iTunes dashboard. Support is also useless as usual as they're not acknowledging the issue and wants me to send screenshots and some other useless info.

We did not have problems receiving emails, and adding internal testers to builds is still broken.