Hi, I think you have a feature in the Quizzes that needs addressing. That is that the Quiz answers are given in italics, but everyone's computer keyboard types in non-italic. This means that new learners cannot easily tell what they have spelled wrong. For instance, if one misspells "здравствуйте" the correct answer is given in italic typeface and many of the letters do not look even remotely the same. To an English speaker, for instance, the Russian letter т in italic looks like the English letter m.
It would be nice to have the answers given in regular typeface, or perhaps regular and italic.