Just for clarification: on what date did you open the ticket? When you say Magix has not responded, do you mean you have literally not even received an acknowledgement of your ticket, with a ticket number? If so, this is very unusual, in my experience. Sometimes, the "answer" to a support question may take several days, or even longer, but I have never not received any response at all.
Hmm... Interesting! Thank you for the update and apologies for suggesting you do something you clearly already had!
Is your need to contact Magix Support the matter you raised in this post? If so, can I suggest returning to that thread and tagging @sheppo in it? He is an experienced user of Acid, and a moderator on the forum; he might be able to offer you some guidance as to whether you can do what it is you are asking.