Translation:It is a window.
Could someone please explain to me why my answer was marked incorrect in an audio exercise when I typed "窓" instead of "まど"? Like, I'm sorry that I already know how to read, write and type in kanji, but really... It just seems counter-intuitive and counterproductive (and it's a little but grating).
It's complicated. Basically it's impossible to cover all these bases both technically ( at least currently and for the foreseeable future ) and also because of a lack of resources. A lot of contributors are already working hard and simply can't (due to current technical limitations) and also because they don't have an infinite amount of time to cover all issues.
See this topic (that I made based on a similar issue you are describing) for more details ( with a good response from a contributor ): https://forum.duolingo.com/comment/32692351