Transport Layer Security (TLS) is a widely deployed security protocol used today for web browsers and other applications that require data to be securely exchanged over the Internet. TLS aims primarily to provide privacy and data integrity between two or more communicating computer applications.
Eyes SDKs are using this protocol to communicate with the Applitools servers and currently support TLS1.2 or higher.
If the framework that you are using is not supporting TLS1.2 by default, please try to use the following code to force it to use this version.
Use the following code before calling to eyes.open()
System.Net.ServicePointManager.SecurityProtocol |= System.Net.SecurityProtocolType.Tls12;