I have characters that have completed shadowlands and dragonflight, but when I bought War Within, I made a brand new character. Now I’m level 80 and trying to get to Shadowlands zones. First, I took the portal to Oribos, but there was no flight master there. I figured I must have to do the intro quests, so I returned to Orgrimmar and accepted the shadowlands campaign quest. It gave me the option to skip the maw, and I did. I was teleported straight to Oribos, where the mobs are now there to question me, doing their little combat dance, but there is no one to talk to, no quest to accept and no Shadowlands quest in my quest log. I tried to jump into the maw to see if there is a breadcrumb quest to pick up there, and it teleports me back to the top of the ring of transference. I tried to go back to orgrimmar to see if there is anything there, and all the deathknights and their portals are gone. Does anyone know how I proceed? I just want to unlock the Oribos flight master, basically.
Edit to clarify: It’s currently a known bug without a work around. The ETA for a fix is next patch, hopefully not too long of a wait.
Thank you so much for the answer!
I tried everything and I can’t do it either 
I can get into the place and do lfr but that is it. even on a low level, I can’t actually do the ‘skip’ that i normally do, but once you hit 70 / 80 it bugs out and you cannot progress.
Same problem here, but at least they’ve addressed that it’s being worked on.
For anyone doing the Ardenweald Secrets of Azeroth quest for the anniversary, you can use the Mythic Timewalking portal to get there (have to be level 80 though).
I saw a comment somewhere where you could also train engineering (Shadowlands specifically) and use the Shadowlands Wormhole generator, as well, if you don’t have other established professions. I don’t have the toy or I’d do it!
edit: apologies, my computer is acting up something foul and I’ve tried to reply several times