Amazon Echo Control - Gen 3 Dot in account but not in Inbox

I recently installed the Amazon Echo Control Binding. I set up the link with my Amazon account and it found all the devices properly. They all were added to my Inbox except for one, which happens to be the only Gen 3 Dot I have. Again, this device appears on the http://myserver/amazonechocontrol UI with a Family of ECHO. Are there any known issues with Gen 3 Dots? If not is there any way to help diagnose why this device does not show up in my Inbox? I have successfully done a couple tests with TTS channels on a couple of the other Dots and they are working fine.