Can't log in with iPhone app
I tried to create an account on the iPhone and just got a loading screen forever. I checked the internet connection and it is strong. I tried logging in with facebook and had the same problem. I tried using a different email, and still had the same problem. I tried restarting my phone and deleting and reinstalling the app, same problem.
I have the same problem . iPhone 5s, iOS 7.0.2. App asks me to log in, then stays forever on what I assume is a loading screen (white, with three dots in the middle and an icon in the top left).
I solved the problem. Apparently duolingo requires cookies to be enabled in order to work properly. Go to settings>Safari>Block Cookies and enable cookies.