Netflix no longer streaming

Bluesky, which Gateway do you have?

I have a KVD21 gateway and I cannot find any way to resolve this issue. I have spent so many hours trying every combination at home with no luck. I just connected the gateway, with nothing else connected to it, but the TV through wifi, but that still does not work. I have been on the phone for many hours with T-Mobile and Netflix, but they are pointing fingers at each other.

I have 2 options at this point. Go back to Spectrum and the increase of $50 per month or say goodbye to Netflix (for which T-Mobile is paying most of the cost). So frustrating.