I just set mine up last night, and while I did have issues setting up HBO Go, I eventually got it working. But Netflix worked right away. Are you sure you're entering the right credentials and that the service is not being blocked by your provider (for instance, if you're in a Work network, Netflix traffic might be blocked, but since you're not on the web interface, the app won't tell you that it's blocked or come up with the usual web filter screen).