1.) Drop the WBB-Verify.php file into the WBB root folder (not forum folder).
2.) Add the WBB-Verify.cs file to your project
3.) Generate a secrete 128 Character Key alphanumeric key and add them to the php and cs file.
4.) Change the GroupID in the php file to the group id, which should act as whitelist group.
5.) Add the URL to the php file in the cs file.

The C# file will return a LoginResponse object, which contains a Status Code and the User Data.