Haven’t tried the program yet, but it downloaded, installed on a Windows 10 laptop, and registered just fine.
I received two E-mail messages from O&O.
The first one was in my junk/spam folder within a few minutes and it was just kind of a “Welcome”.
The second one was in my junk/spam folder a few minutes later, and it had the registration info.
I chose the “Custom” option for installation, and unticked (so it would not install) the automatic update software.
Lokking forward to trying this, thanks!