This user has posted English posts in the past already, mostly senseless, but English it was
You can't expect from everyone to understand German.

True enough, there are no board rules set up yet (which reminds me to suggest that fact, thank you for that)
But it's generally better to post in English on international forums

I don't want to sound harsh, but the past learned me not to give any chance to derail any threads, hence "the last warning"

But thanks for helping that user anyway and suggesting to run the PK3 cleaner. That's why I asked to post in English, because now others can use that tool as well when encountering the same issue(s)