Would be great to have hints for how to respond. Getting to the next level is important and we will get stuck once we hit our knowledge ceiling.
An idea for the hints is simply maybe showing a few of the words that might come next when the user clicks "hint".
I also wondered what the max fluency score is. Is it 100? I got 9 with saying the most basic of things in Italian.
I would make the text box way bigger too. I can barely see what has been said. Also my text and the response text show up at the same time. I would space this out more naturally.
Also it entered as my text "You: Untertitel der Amara.org-Community" which I definitely didn't say.