Jon actually died so he finished his watch technically. The rules don't address being revived.
I'm pretty sure they referenced that in the show, too. As I recall he ordered Samwell to go south before he died. Am I remembering right?
Bad News: They said GoT last season might start in 2019
Interesting read, an interview with Bran's actor. The title says he "debunks" the night king theory, but that's clickbait - he doesn't know, but doesn't think it's true. It also addresses his being corrected by Samwell:
He also reminds us of what the previous 3ER said - Bran isn't ready yet, which may also indicate part of Bran's not-quite-omniscience.
I just got caught up after watching for the past, two months or so and I must say, this is quite a series. The acting, writing, effects it's all done so well. I know the budget for this show is huge but still. I wish I started this show years ago, I'm sure things would be far more satisfying if I was a fan from the start. I think ill pick up the books in the interim.