Nothing's working for Mac os 10.12.1 and Safari and Chrome on MacBook either.
I just got a sling adapter today and when I chatted online with Dish I was told I wasn't able to watch live TV because I was using a MacBook!!! (and that someday it'd work

) Now I see it's an across-the-board problem with dish anywhere.com. I reset router, receiver (4 times), cleared both Safari and Chrome browsers, and rebooted my MacBook 3 times before I found this in the forum.
Boo, Dish! (Yes, my iPhone app works ok but I don't want to watch on that little screen)