John,
There's a Javascript message on the page that states:
Uncaught Error: You must specify a valid JavaScript API Domain as part of this key's configuration.
It sounds like you have not properly created and configured your LinkedIn application. Please check out the App Creation section of our guide, specifically the Javascript API Domain setting:
www.sourcecoast.com/jlinked/docs/configu...ide?showall=&start=1
Hope that helps, but if you need anything else, just let us know!
Thanks,
Alex