sample code to connect to SFTP just like WinSCP? (wodSFTP / wodSFTP.NET / wodSFTPdll)

at the connectedevent, this is being logged

Connected Error: Authentication with the server failed.
Exception thrown: 'WeOnlyDo.Exceptions.SFTP.AuthorizationException' in WeOnlyDo.Client.SFTP.dll
WeOnlyDo.Exceptions.SFTP.AuthorizationException: Authentication with the server failed.
at A.B.f()
at A.B.A(IAsyncResult , Boolean )
at WeOnlyDo.Client.SFTP.Connect()
at WindowsApp1.Form1.Button2_Click(Object sender, EventArgs e)
The thread 0x93a4 has exited with code 0 (0x0).
The thread 0x5474 has exited with code 0 (0x0).
The thread 0xb4c4 has exited with code 0 (0x0).
Connected Error: Authentication with the server failed.