A company that lists its full address and telephone number always inspires confidence and I am delighted to try their software. As with most such programs that are used infrequently, I like to install them to a USB drive but this did not list that drive as an installation option. However, it did see an external WD drive so I installed it there. The registration e-mail came quickly and the information was accepted in the program without issue. I have not had an occasion to try it but am happy to have it available when the need arises. FYI, their website has good instructions. Lastly, be sure to go into Settings and turn off updates because an update may void your license according to the Terms on the offering page.
Thank you to O&O and SOS for this.