The SmartPSS program is EOL on Windows 

The 2020 release is the final version for the software with Diamond recorders. No future updates.

Migrate to SmartPSS Lite (256 Ch free) here:

https://drive.google.com/drive/u/0/folders/1o7BzjIMGZYWcOdXoLXG-uruqDimnn9Cb