Rebex TLSSocket on netcf3.5

Hi I am evaluating Rebex TlsSocket to establish secured TLS1.2 MQTT connection with Aws IoT Hub. We have volume field devices and a successful trial should help us connect all the field devices with AWS IoT Hub.

I referred to this article and followed all steps https://forum.rebex.net/9807/how-to-use-tlssocket-directly?show=9807#q9807

Code:

this.tlsSocket = new TlsClientSocket();
tlsSocket.LogWriter = new Rebex.FileLogWriter(@"D:\log.txt",Rebex.LogLevel.Debug);
this.tlsSocket.Connect(new IPEndPoint(this.remoteIpAddress, this.remotePort));
tlsSocket.Parameters.Version = TlsVersion.TLS12;
//var cert = Certificate.LoadPfx("devicecert.pfx", "");
tlsSocket.Parameters.CertificateRequestHandler = CertificateRequestHandler.CreateRequestHandler(clientCert);
tlsSocket.Parameters.CertificateVerifier = CertificateVerifier.Default;
tlsSocket.ValidatingCertificate += new EventHandler<SslCertificateValidationEventArgs>(tlsSocket_ValidatingCertificate);

I am getting following error:

2023-05-23 00:12:00 INFO TlsSocket(54267293)[1] TLS: Performing client certificate authentication.
2023-05-23 00:12:00 DEBUG TlsSocket(54267293)[1] TLS: Error while processing TLS packet: System.Security.Cryptography.CryptographicException: Unable to create SHA256 hash using 楍牣獯景⁴湅慨据摥䌠祲瑰杯慲桰捩倠潲楶敤⁲ㅶ〮� (0x80090008).
   at ghric.xtdkc.wbbry(Byte[] p0, aippr p1)
   at Rebex.Security.Cryptography.AsymmetricKeyAlgorithm.SignHash(Byte[] hash, SignatureHashAlgorithm hashAlgorithm)
   at ghric.autbd.hwlnr(Byte[] p0, Int32 p1, Int32 p2, ivnfx p3)
   at ghric.autbd.fwlia(Byte[] p0, Int32 p1, Int32 p2)
   at ghric.yexzh.fcfxr(Byte[] p0, Int32 p1, Int32 p2)
   at ghric.yexzh.loqiv()
2023-05-23 00:12:01 INFO TlsSocket(54267293)[1] TLS: Fatal Alert:InternalError was sent.
2023-05-23 00:13:07 Opening log file.
2023-05-23 00:13:07 INFO FileLogWriter(1)[1] Info: Assembly: Rebex.Common R5.11 for .NET Compact Framework 3.5

My client Certificate file "devicecert.pfx does not have any password set. I am able to use same certificate on .NET 4.5 Windows to connect.