Please go to Adobe Customer Service (make sure to sign in to your Adobe account first and allow popups on your browser): https://helpx.adobe.com/contact.html?rghtup=autoOpen will automatically open the chat window. Type "Agent" in the chat box to bypass the chatbot and be connected to a person.
thanks for help. But unfortunately there`s no type "Agent" to be seen in the chat box. Meanwhile I tried another way to come into contact with Adobe but I didn`t receive until now an answer with a case number. So I`ll wait for another day.