This seemed to work a bit differently than the usual SOS offerings. After downloading and saving, I launched the SOS downloaded pack as normally, got to the point of clicking on “Install” and nothing happened. I looked in the download folder and noticed there was the program in a zip file! I unzipped that and it contained both the install file and portable files. I launched the portable x64 file and it activated fine with the key.

In a seldom used program like this, I always prefer a portable version so thank you for that Macrorit and, of course, SOS.