The guys above (thanks!) gave me two oppotunities: Posting this problem in the Meta and Reputation sector.
But how could that help me to solve this problem ? As I said I dont want to harm his reputation, Im pretty sure being a Staff in the community can be hard sometimes, but I did nothing wrong.
The reputation section is filled with internet sleuths that will help you to identify whether or not your claim is valid. You won't find many of these types of members in the Beginners & Help board.
You won't be harming anyone's reputation unless you (or someone else) can you prove that the staff member is blatantly neglecting their duties. If you are adamant that your translation is correct and legitimate, then you should definitely start this thread in the Reputation board. If there is a chance that the staff member is not doing their job properly, then the powers that be need to know about this.