Ciao! I've been using the German for Russian speakers course, and every time I'm half way through lesson 3 of Basics 2 and hit check, the check button freezes and I can't advance, I can click on the discussion button, or exit the lesson, but I can't advance. I also tried testing out of phrases, but the same thing happened. I don't think it's my internet connection, everything else I do is just fine. If you can help it would be great!