BioStar2 Device SDK doesn't have a matching algorithm to use Fingerprint Matching on server PC. 

It only has an option to enable the function and has an example in Server API.

When you run Server Matching Control, there will be below error.

Suprema License Error : Invalid Verification!

This is the Suprema license key you need in order to use server matching feature. Once you receive "UFLisense.lic" file, you need to activate them using "activate_lic.exe" file. Suprema ID sales team will give you further instruction on this.

Suprema ID:

Once you activate the license, please copy this "UFLisense.lic" file into BioStar 2 device SDK folder.
The beta BioStar 2 device SDK version you received, you will find "example" folder there.

Please try to copy the license file to example folder (Example > cli > csharp > common > lib > x86) and see if can use server matching.