I've converted this to C#. This will need to be checked and approved.
https://www.codewars.com/kumite/5d448b95f93415002b3beef6?sel=5d448b95f93415002b3beef6

Now at least that means something x)
Unfortunaely, you'll either have to wait for someone willingful to do it or to solve it in another language and then translate it yourself.

wth? x/
not a suggestion

It can't.

However, there is no such test case provided by the exercise. Are you sure that you are printing the correct things? Did you add your own test case and missed something with the parameters?

Is there some other info around the failed test to help me find where it could have gone wrong?

Let me know if you can give me a bit more info or possibly some code to look on and I'll try to look into it. :-)

Good luck!