Fingerprint reader not detected

Hello. I have a Dell Vostro 3550 laptop with fingerprint reader. I recently upgraded from Windows 7 to Windows 10, but my fingerprint reader stopped working and I can't find the drivers to make it work again.

Can anyone help me here? I've installed DigitalPersona software I found on the internet but I keep getting the message that the reader is not detected and can't use it.

Thanks for your help.