Enable Test Mode — Self/Series

// C++
CyoGateSDK sdk;
sdk.initialize({ .apiKey = "YOUR_SANDBOX_KEY", .environment = CYOGATE_ENV_SANDBOX });

// C#
var config = new CyoGateConfiguration { ApiKey = "YOUR_SANDBOX_KEY", Environment = CyoGateEnvironment.Sandbox };
var sdk = new CyoGateSDK(config);