"Unexpected error"

Beginning Tuesday evening (6/13/17), our Tivo HD has stopped streaming Netflix. If we select the Netflix option, we get a screen saying "An unexpected error has occurred, either the Netflix service is inaccessible, or there was a network error. Please try accessing Netlix again. If you are still having trouble, go to www.tivo.com/support for help."

I can't find any help on that page, so here are the things I've tried:
- Restarting the Tivo using the...

"Unexpected error"

"Unexpected error"