I encounter the sam error too, and exactly what you have done. Does anybody knows how to resolve it?

I receive the reply email from apple support. They still try to find the root cause, but they give us a temporary solution (which I think they modify on their server) Then I rebuild my app and upload it, this time I receive an error during uploading, it's about wrong supported platform in third party framework Info.plist (it supports iphonesimulator in its info.plist) After modify the info.plist only, everything start to work, and we can start to test it on testflight