The license is not tied to any particular Firefox profile. There's more information on
the VDH license over here:
https://groups.google.com/g/video-downloadhelper-q-and-a/c/BzPLK2YyL-s
You'll probably want to bookmark that for easy reference. I recommend you read that
entire thread, if not now, eventually. As you read through that thread, you will come to
2 references that are relevant to your question.
The first reference is a general discussion of the VDH license. You can find that
reference quickly by doing a string search on "philosophy" within that thread. That will
reposition the web page on the relevant reference. You will see a link there. Click
that & read up on what the VDH license does & does not do.
The second reference is more of a warning to be aware of something that can happen. It
might not happen but it's possible. You can find that reference quickly by doing a
string search on "revalidate" within that thread. That will reposition the web page on a
discussion of what to do if you find your license has become locked.
I look forward to your ongoing participation in this forum.