I just submitted a webview-driven app to the App Store and it warms my heart to see others doing the same. This seems like a neat tool, however I am unable to g

I just submitted a webview-driven app to the App Store and it warms my heart to see others doing the same. This seems like a neat tool, however I am unable to get past the sign up screen on either my Moto X or my iPod Touch...the large "Sign up" button doesn't seem to do anything. Am I doing something wrong?