The books aren't separate from the show Alliekristina they actually are canon. Though I don't think the Moonlight armor will make an appearance in Wizards.
Was it ever said that they were non canon? And if the guys don’t confirm if it’s non canon or not wouldn’t that mean they assume that we think it’s canon.
I already tried getting a confirmation fro Del Toro and got nothing from him. I also think if everything in TOA is canon then its stupid to to tag it canon, who the hell came up with that?
I think that was meant to separate Tales of Arcadia canon from the original Trollhunters canon (the book the show is based on). Look at the page Jim Sturges Jr. and Toby Dershowitz those are the only pages with the non-canon label.