App glitch on Kindle Fire
Today I downloaded the app to use on a Kindle Fire HD. The first half of the lesson went well, until a question came up asking me to type in my answer in Spanish after hearing the sentence. The app wouldn't accept any of the typing for this question (previous ones had gone well) and wouldn't let me "check" the answer until I entered something, a "Catch 22" situation. Finally I turned the app off, ending the session without going any further. Any assistance you can provide would be appreciated.