Hi Customer. Welcome to justanswer.
You need to install the compatible software for Windows 10. Either I can install that in your computer via Secure remote assistance or I can give you the link from which you can download the software.
Reply so that we can proceed further.
CLICK HERE and then press I Agree. A file will get downloaded. Just open/run that file to start the remote desktop session.
Once you click the link
You will be redirected to a page. Press I Agree and a file will automatically get downloaded. Check your download section, a file named ELSINORE.SCREENCONNECT will be present. Just open that file so that I can connect to your computer.