That’s the problem, I did everything by the book. I’m in Switzerland and as in many european countries I’m instructed to open a ticket on MySteinberg → Support. Which is what I did. Last time (maybe 6 months ago) I even got an automatically generated Email saying that my ticket would be attended to within 1-2 working days. I wrote another message in the ticket after a week or so and also replied to the Email, but only silence. This time I didn’t even get the automatic message.
I do see a phone number, though, so I will call there if I don’t hear anything until end of the week.