TiVo XL4, replacement Bolt+ go belly up, TiVo flakes on monthly plan

I've been a TiVo customer for over 15 years. My XL4 went into an infinite reboot loop last week, so I ordered a replacement Bolt+. When I called to activate it, the nice lady on the phone gave me the following service plan:

TiVo Service Plan - $6.95 - Service only, No Commit, Monthly

... which is confirmed via an email. The new TiVo Bolt+ worked for less than 24 hours, and then promptly stopped decoding content.

I had Comcast guys here checking everything for 4+ hours, and we...

TiVo XL4, replacement Bolt+ go belly up, TiVo flakes on monthly plan

TiVo XL4, replacement Bolt+ go belly up, TiVo flakes on monthly plan