So, I got my 4k today and plugged in the ethernet adapter with the USB adapter plugged in to the outlet (not tv) and instructions say to just open network and I should have an option to select wired. Um, yeah; i'm gonna need you to come in on Saturday...
Are these things picky and need to be rebooted 11 times to work or what?
The 4K stick is very temperamental when it comes to power sources. I have two and they would only work with the power adapter included with the 4K stick. A power source from another type of fire stick did not work and of course plugging it into a television USB port caused the stick to stay in a rebooting mode.
That adapter is only receiving the Ethernet signal from the cord that is connected to it from your router, regardless of your Internet company. Seems then you have a connection issue from your router to the FireTV Adapter.