Did you follow all the instructions in the plugin configuration page?
https://github.com/UniversalDevicesInc-PG3/udi-poly-ELK/blob/master/configdoc.md
ELKID
This works by right-clicking on a node in the ISY and adding a note with "ELKID=n" where n is a unique integer
Then click on the "export" link provided below which will appear once your ELK is synced
Note: Depending on how many devices on your IoX it may take a while to process and generate the export file.
Once the file is downloaded, open ElkRP connect to your System, then right click on Automation -> Lighting and import the file.