I have been putting together an App, but now when I try to retrieve the work I have done so far I get an authorization denied message "you do not have permission to access DPS. Has anyone encountered similar problems?
The beta is closed and there is no way to retrieve the prior content. You'll need to sign up for a trial via www.adobe.com/go/dps. You can go from trial to licensed, but not from beta to trial or beta to licensed.