I'v eneve rhad my payment info lost, but everytime I register a new TiVo I need to enter a new PIN. Although I use the same one, but still it always requests for me to enter a new PIN the first time I access Amazon from a new TiVo.
TiVo Mini x4
Roamio Basic OTA
39TB unRAID1--53TB unRAID2--36TB unRAID3