Brand new Ultimate 2 won't connect to anything

Hello all, just got my ultimate 2 today and I've gone through multiple video guides and other threads already but no one seems to have all of these issues. Out of the box it turns on fine no problem, but after trying to connect it to my switch and my PC both with Bluetooth and through USB absolutely nothing will read that the controller is connected. Every time I try to pair it through Bluetooth it rumbles and shows the first green led lit as if it's connected to something but there is nothing else possible for it to connect to. I know im quite out of my realm with this stuff as most everything i buy is plug and play so any help would be much appreciated.