Did you tell Alexa to "Discover Devices"? It sounds like your items haven't been synced with the Alexa Smart Home yet.
The full configuration for Alexa is up on the website: http://mobilinc.com/features/echo/
If you can't get this working, in the Alexa app under Smart Home, select "Forget All devices and scenes". Then unlink from both MobiLinc Skills and then relink the MobiLinc Custom skill first and sync your items. Then link the MobiLinc Smart Home skill and confirm that Alexa pulls in your items from MobiLinc during the Device Discovery.