Two normally reliable sites have not worked on Windows desktop browser for the last week. Anyone else experiencing the same issue or know whats up?

United States TV 247 and United States TV Go are two well known and pretty reliable free IPTV sites but they haven’t worked for me using W10 FF75 browser for a week now. I connect through NordVPN and the video player returns a “problem playing protected content” error message no matter what channel I select. Tv Go works fine on my iPad using Nord, haven’t tried 247. What gives? Both sites would have sporadic issues from time to time but for them not to work for a week seems unusual.