So Today i faction changed one of my alts and now he cant enter Draenor.
THe character is level 90 and already did some of the intital quests after the dark portal, but not up to the garrison.
Now i faction changed to the alliance and dont see any way to get back to draenor. The dark portal doesnt do anything, no quest popup and khadgar doesnt have anything to say to me.
Have you tried walking into the portal and not flying? I know at the start of the xpac you would have to walk into it, flying didn't work. Also check in stormwind if there is a portal to warspear, there is in Orgrimmar.