Having the same trouble. It started yesterday morning for me. I was on chat with Xfinity support yesterday for 45min and they could not figure it out. Some folks on another post also are having the same issue and said they called in yesterday. One of the technicians seemed to attribute it to their legacy bundle plan on their account. I called in today and my tech support agent thought it might be the same thing, that I'm on an old bundle. We ended up changing my plan to one of their new ones, so I'm now saving $50/mo with no loss of services and no contract.... but my HBO Max still does not work on any of our devices even on the new plan. It always pulls up an Xfinity page saying I need to add HBO Max to my plan, but attempting to add it just results in an error telling me to call Comcast support. My tech support agent is baffled and is going to look into it and call me back. I'm guessing this isn't account specific at all and there is some kind of disconnect in the API handshake between HBO and Xfinity. I asked my chat agent if they have test accounts on their side that they can use to try to duplicate the issue, but she said they do not. If this is is systemwide, it could take a while to get fixed since they haven't even recognized it as an outage yet. Hopefully, it's resolved soon. We hardly ever watch TV through the Xfinity box anymore, just the apps and AppleTV.
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