Can I install WPL Soft version 2.3 on Windows 8.1 64bit ?
You have to contact the developers of the application because the software is not available for downloading anymore. I've used their official website along with the search features to find something, but there were 0 results.
I recommend contacting them through the following page to ask about this product and if it's still available: http://www.deltaww.com/services/customerService.aspx?secID=8&pid=2&tid=0&typeid=5&hl=en-US