Installed and registered with no problems.
HOWEVER, this would not download a Vimeo video. It hung on the “analyzing” icon for a very long time until I finally had to close the program completely.
When I did a quick check on YouTube, it worked as advertised.
HOWEVER, when I downloaded it Avast flagged it under its Ransomware Shield as trying to alter the file in a protected folder (my desktop)!
This may be a false positive, but I don’t need the potential threat it poses. Deleted