Found out. Apparently, since I have a Tivo with cablecard instead of their $15 X1 box, and use their Roku app for IP only channels included in my package, their computer will not let them add the sports and entertainment package to my account unless I pay for an unneeded X1 box too, even though I could have watched it fine on the Roku app.
So, no NFL Red Zone for me.
Good luck. I tried X1, and the box ran so hot I had to buy a laptop cooler for it, and it still burned out after 6 months...hence my using Tivo. I solved my issue. I switched to AT&T Fiber internet and DirecTv with Sunday Ticket for $30 less a month. I wasnt in the mood to play.