This was a JS and Python kata long before it was a C kata. Kata can have only one difficulty; there can be no different ranking per language.

Maybe the translation should not have been approved, maybe C programmers should accept their language is different, and tasks are more difficult than in other languages.

That's all water under the bridge though; in C, this is now a not that easy kata that gives very few points. You can always skip it, or solve it in another language. ( Or try to convince Codewars to massively redesign their site and introduce ratings per language .. nah, probably not that. )