I am totally confused and scared about the "new" way of licensing

I finally came home and now I’m trying to check if I have a valid grace period for one of the licenses… I found an instruction on the net, it explained how to do it, I did an upgrade for Steinberg download as, Steinberg was also automatically installed activation manager. But, when I run St.Act.manager-nothing happens, I just get a blank window with nothing in it:


Looks like I’m going to struggle in this transition process… :frowning:
Does anyone know how to solve this problem?