I have 2 Series 3 OLED DVRs with Lifetime. Both bought used and had the product lifetime service transferred to my account. They are both on the same wired network. Recently I noticed one box lost it's Media Access Key (MAK) and also its DVR name. Under system information it comes up as "Name this DVR on Tivo.com" yet it is still downloading programming data and the box status still shows as Lifetime. If I go on Tivo.com I can see all the devices with the TSNs listed on my account. If I go to Device Preferences on Tivo.com I am only shown and able to edit the box that has a Media Access Key. I am not able to communicate to the unnamed box with Tivo Desktop, Kmttg or via my other DVR (unable to transfer recordings between boxes). Everything else works fine with both boxes. My DVRs are well-maintained, I replaced all the caps on the power supply boards as a preventative measure to ensure longevity and I vacuum and dust out the innards regularly. I have contacted Tivo twice regarding this issue, and have three open tickets, and the rep's suggestion is always to restart the box and wait 24 hours, and nothing happens. The lifetime transfer was done awhile ago and the box had been working fine, unless some permissions setting changed on their end? I remember you used to be able to be escalated directly to Tier 2 support who who have better knowledge of their technical systems, but it seems since they got acquired by Rovi, you always get the "did you try turning it off and on again?" level people. If anyone else has any other ideas I can try, please let me know.