WIE KANN ICH MEINEN COMMUNITY BILDSCHIRMNAMEN ÄNDERN, DA ER MISSBRAUCHT WIRD?
Click on your Avatar (top right image) to edit your account
1. Click your avatar at the top right and click My Profile from the menu.
2. On your My Profile page, you'll see a little edit icon next to your screen name:
3. Click that and enter a new name, then click Submit.
I'm not certain what you mean about someone abusing your name, but you can use the Report link to report that abuse to Adobe staff, who can then deal with it.
You have only one post so far. How can your screen name possibly be abused after only one post?