C# Client and Unity

Hello everyone!
I am currently trying to add analytics functionality to a Unity app. For that I am trying to use the C# client found here: https://github.com/matomo-org/piwik-dotnet-tracker

However I can not get it to work and I am really missing some documentation here. Has anyone managed to use it there and can give me an introduction on what to do?
I am using Matomo-Version 4.1.1