Is there any version compatible with Windows 10?
Yes, there is a version of IdProtectClient, and it's available for downloading through the link posted below. Make sure to save all the files in the directory, and then launch the MSI installation file, else you'll receive an error related to Data1.cab.
Download page: http://www.dsoft.ro/salarii/?dir=Certificate/CertSign/Drivere/Athena
Thank you Alex, you were really kind. Your answer is clear in every detail and it's very useful for me.