For quite some time I have had two Tivo Vox remotes paired with my Roamio pro working flawlessly. One day both stopped working and only worked in IR mode. Couldn't get anything to work after troubleshooting. Tivo sent me a new remote which works great in RF mode, but can't get either of the other two to pair in RF only in IR. Tivo support says only one RF per TiVo at a time, but for years I have had multiple RF remotes. Interestingly I can delete all paired remotes, and RF pair different remotes successfully but only one will work in RF mode. Did something change with the code recently to not allow multiple RF remotes per device? Of note the other remotes will occasionally pair in RF mode, flash yellow, but not actually control the box. They will control in IR mode. Thoughts?