I just got my Hubitat hub C5. I connect the ethernet cable and power and registered it.
Then I updated the firmware, and when it finished I select the option to safe power off, waited for the red light before disconnecting from power.
I moved the hub to it's "final" location, and connected the cables, but it doesn't power any more.
There is no more green, blue or red light in the hub. And I can not access the hub or find it in the registration web page.
Sorry for the troubles. If you didn't do so already, please send us an email at support@hubitat.com. please be sure to include the purchase order details and a shipping address if you have purchased the hub from Amazon.