I know your initial answer will be 'Make sure you added them to Webcore from ST -> SmartApps -> WebCore -> Settings -> Available Devices
That has been done. In the Goovey/IDE the devices say that they are available to both Alexa and Webcore.
In Use By
Alexa can discover them, but they dont appear in Webcore. Any idea why these devices (all lights) are not being available in WebCore?