I just received a used one I got from eBay. As soon as I plugged it in I did a factory reset and signed into my iTunes, iCloud, and HBO Now. Movies play fine, but when I try to watch a series, like Game of Thrones, it gets stuck on the "Accessing HBO Now" screen.
Any ideas on what's wrong and how to fix it?
MacBook Air, OS X El Capitan (10.11.6), null