Configure the property 'wtSimulatorBaseUrl' in extra properties of Device from Device Manager UI. This property holds the base url to the lanforge JAON JSON API. eg: http://localhost:8080. The gateway device ti be used for candela testing should have this property configured.
Configure the property 'wt.service.base.url' in Automatics Properties and this holds the base url of WTService. To add property please follow steps in Add Property