apple tv subscription not activating

The same problem I see hundreds of other people having. I signed up for the bundle and was able to activate peacock, Netflix, Hulu, Disney - all with no problem. When I first tried to activate Apple TV we had an account/subscription. That account subscription is now ended - yet when I click on the activate Apple TV link from Xfinity it always says the same thing - experienced a problem. it doesn't work on any tv, any service, etc. Please send me a new activation link that I can try to use. Please help been trying to solve this for weeks.