Unable to watch live TV - DirecTV

I'm trying to watch live TV, and it will not work on either my iPhone or iPad. On both, I get message "we ran into a bit of a problem. Looks like your receiver is in use or you're already streaming on another device."

This is only happening on certain channels, like the NBA League Pass channels. Why can't I stream these? I do subscribe to NBA LP.

This question, "Unable to watch live TV," is about DirecTV channels, programming, equipment, and sports.

DirectV Guest

Same issue. New directv customer and it's rather annoying. I can stream random channels no problem but trying to stream cspan or nasa I get this odd error that there's a problem.