For the last couple of weeks, I've been having problems with the keyboard in the Duolingo iPhone app. Sometimes it will work on some of the questions, but most of the time the keyboard will pop up, but letters / words will not enter in the answer box. This is only a problem with Duolingo; the keyboard works fine in every other app. I really like using the app because it makes me practice saying the phrases and because it's convenient. But without being able to use the keyboard, I can't complete any of the lessons. I've given feedback within the app, but I haven't heard anything back. Please fix this! It used to work fine.