Flex won’t connect

I plug in fire stick - it just works. I plug in chrome cast - it just works. I call Xfinity to cancel tv and just subscribe to internet and it’s an hour and a half on the phone. They tell me I have to drop off the old boxes at the store and they’ll give me a new Flex for free to stream. I’ve been trying to get this piece of garbage to work for an hour - does NOT work. Tried wireless and via Ethernet. No wonder HULU and Netflix and Roku are all growing. Returning the flex tomorrow. Not worth my time.