What does the message " TiVo Service Interrupted" on my TiVo device mean?

Your TiVo DVR will display this message on the 31st day your DVR fails to connect to the TiVo service.

Normally, your DVR connects to the TiVo service automatically every 24-48 hours, and if unsuccessful, will try to connect again within 24 hours. You can manually direct the DVR to connect to the TiVo service by going to TiVo Central and selecting Messages & Settings > Settings > Phone and Network > Connect to the TiVo Service Now.