"Who are they?"
What happened to the Cyrillic characters? Originally I was learning/practicing using those, but they seem to have disappeared. The reason I ask is because I typed хто воні and although it counted it as correct it told me there was a typo in my answer. That's fine, except that the suggestions in the bottom left where it says "Almost correct!" only suggests "Khto vony" not the Cyrillic proper spelling.
Is there a way to revert back to seeing the Cyrillic characters in lessons?
There is a button in the top left, next to tips and notes, make sure it is switched to Cyrillic. Although in this case it would be the letter "и" that makes the difference from correct and incorrect, as "и" is the equivalent to "y" and "і" is the equivalent to "I"