Okay, the question is, if I wrote an article in the wrong place and want to delete it, but they tell me that it is impossible to delete. What to do?
If you’re talking about the thread you created, that currently resides in off-topic (it was elsewhere earlier today I believe), you can’t now. There are multiple posts on the thread from other people. A Moderator/Admin could delete the thread, but that would require a strong reason which is unlikely to fit in this case (i.e. mega spam thread).
You can however lock the thread (bottom left of the screen) if you do not want it open to further posts from people.