After sending the question I have found the page, where and how to make the changes. Thanks for Your concern!
In one case I have sent the whole article and later added Abstract, which became an additional article. Many of my articles are like skizzes. Some are two times. Maybe during this month I could clean my files of excess files.
PS If I understood, only I can see these messages.
@Timo, @Hans- Georg, I understand you, but where is the problem? A solution is found? NO, so, I need to insist because we need a peaceful solution of the crisis, and I hope. There are so many questions we can ask on the crisis. We can't forget that the situation is very bad now!