I have paid the $5 and setup a test application, added the serial number for my chromecast as a test device, and hosted the receiver file on a public server.
One step does mention "Using the Chromecast setup application, make sure [x] send your serial number to Google is checked." but that option doesn't appear in my chromecast setup app. I'm thinking this is my issue, but I'm not sure how to tell my chromecast to send out the serial number.
Thanks in advance!