I'm going step-by-step through the Adobe DPS Quick Start Guide and have had success up to the Building an App section. I entered all the information needed and clicked submit. After waiting a few seconds, it says "Failure" under status, rather than giving me the option to download an unsigned app. No idea what I'm doing wrong. I used the Bundle ID I had just created in Apple Developer.
This is a known issue some people will hit with the beta. It's taking longer than it should to create the analytics report suite after you create your project, and if you build the app right after making the project it will fail because it can't get the analytics info. It likely worked the second time around because enough time had passed for the report suite to get created.
I had to publish at least one Article as content before the App would compile successfully. However it may just be a coincidence considering the information provided here, regarding the analytic suite.