[CtDMonet]

Generally, I would agree that that must be the reason, however I never entered my e-mail address. Not to mention that the same apk was used by two different people, and it worked fine.

As for the Private Beta? Give me a break. Sure, it will expire, and have bugs (like most betas), but "get in trouble?" -- please. You've been watching CSI too much. The only difference between a private and a public beta is that they want to limit the feedback to specific groups.