Dateline recordings have no audio

Recently, I have started having the issue of having no audio to some of the recordings I have set. I have all manner of recordings set and they all work fine except for the Dateline show.  There is audio during the commercials and as soon as the show resumes the audio is cut.  It would be perfect if it was the other way around.  This has been happening for a couple weeks now.  Other details are that it works fine on my iPhone but i'm not trying to watch anything on my phone and also I am accessing  Xfinity through my laptop and not from a tv in the house.  Ive only accessed Xfinity in this way and I never have had an issue until now.  Please help!