Lost the ability to use Plex to DVR all non-OTA Cox channels - No ESPN, TMC, AMC, etc

I' ve lost the ability to use HD Homerun Prime (cable card) with Plex to DVR all non-OTA Cox channels - No ESPN, TMC, AMC, etc. All channels detected show up as 'Protected' in the Plex DVR setup menu. I am able to receive channel 1987 as warned last year, and still do. I've re-scanned channels through HD Homerun Prime, but to no avail. Any suggestions?