Zero tier Socket in Xamarin.forms?

I installed ZeroTier.Sockets (libzt) nuget in my Xamarin.forms Project and tried the example shipped with it , but I have this error when I try to run the project .
" System.DllNotFoundException: libzt assembly: type: member:(null) at (wrapper managed-to-native) ZeroTier.Core.Node.zts_init_from_storage(string)"

any one has tried it before , please any clue
thank u