Service outage due to downed tree limb - Tivo no longer able to access channels

Hi!

I have a Tivo that has been active for years.  After storms in our area and a lengthy service outage, it is no longer connected to Xfinity.

We have had repeated strong storms in our area this summer, and there have been three separate times over three months when a large tree limb fell across the cable line, ripping it from the house and cutting the service.  Xfinity is now burying the line to the house to avoid this in the future.

We don't watch a ton of live TV, but this week I tried to watch live TV and was met by a "this channel is not authorized" kind of message on all of the channels.  The last show was recorded on the Tivo on August 2nd.  Everything recorded after that was blank.

How can we get our Tivo reconnected?  

Prior to posting this, I reached out to the online chat via the app and was unsuccessful in getting someone to understand the issue.  They kept telling me I should bring my cable box into the store for replacement.  Not sure they understood the issue, even after multiple attempts to explain it.  That's what brought me here.