The answer is - they aren't going to say. The previous channel was what was known as a Private channel. These were unsupported by Roku, and provided the entire spectrum of content, from religious content, to porn, and video streams of dubious legality. But Roku announced well over a year ago they were going to cut off all private channels. There's potential legal liability that was one reason, and I'm certain there are others.
For whatever reason, Roku has not certified a version of the Vidangel channel. They will never provide that explanation to the public. Vidangel claims that Roku won't tell them either why they won't certify their channel. I'm not going to discuss who is or isn't telling the truth. We here have no way of ever knowing.
Bottom line: only channels certified by Roku are permitted in the channel store. They have some valid reasons for this, and it's the same thing Apple does with the iTunes store. I make no claim on if Roku has valid reasons for denying Vidangel certification, and I have no "dog in the fight", as I never used the channel previously and likely wouldn't bother with it anyway. But I support the desire of the users that would like to have it, for I completely understand the potential need for it.
