Can not log in or port to Zandalar without WM on

I was unable to log onto any of my toons in Zandalar, or port there from Org all day, would get a transfer aborted or world server down error when I tried. I tried turning off all add-ons, and even did the intro quests on another alt. It wasn’t until I tried turning on War Mode that I was able to port to Zandalar.