Can't download Smart PSS. I have Windows 10.
I've checked the application page at Software Informer and it appears there is a direct download URL for a package of 112 MB. I recommend you access the link posted below. Then locate the little Download button and click it. The website will initiate the download and then you will be prompted to save the installation file.
The package is in ZIP file format which means that you will need an archive handler. Browse the following result list to choose one: http://software.informer.com/search/archive+extract