Halo Channel Windows 8.1 won't play videos etc.

So for a while now, I’ve wanted to watch Halo Nightfall, and because I don’t have an Xbox One, but I own the MCC (Don’t ask, long story), I was hoping to watch it on the Halo Channel on Windows 8.1, seeing as my laptop is Windows 8.1. Problem is, every time I click to play the first episode, or any episode/video/music as a matter of fact, it comes up with the loading icon, then says “Halo Channel is Unavailable. Please Check Back Soon”. This has been happening for over a month, and I don’t know what’s wrong. Is there a way to fix this, or is there a fix coming on for this in the future? Because I really want to watch Nightfall, seeing as I’m not 100% certain when I’ll get an Xbox One to actually watch it.