Wino in the fourth case?
Yup. For neuter nouns it will be the same as the nominative.
What is the fourth case,please?
Accusative. Don't worry, we do use names of the cases in the comments everywhere else, I think.
"They make the wine" is not accepted. Why is that?
Oversight. Usually both a/an and the should work, unless one really doesn't make any sense in English. Added now.
They are making wine is not accepted, even though the translation given is They are making wine
Which clearly means that it must have been a bug.
Is anyone else other than me having difficulty with
the `Type What You Hear`` segments. eg. using diacritics.