Hiring a professional translator to edit each translation would cost at least $200 per each translation, probably more. There are currently 28 translations. Hiring professional translators to edit all of them would cost thousands of dollars. It's just not financially possible.
The translations can be downloaded from here: https://jv16powertools.com/downloads/TranslationHelper.zip
Each translation file is a text file that you can edit with any text editor, such as Notepad++. If you wish to fix issues in the German translation, simply edit the German translation file and send the fixed version to me and I will include that to the next release. You can send the file directly to me: jouni.flemming@macecraft.com