Tried several different zones and still get the message: you are not subscribed to zone: live" etc.

From my experience, exiting the game then going back in works.

Works fine for me. There seems to be a bug occasionally where you don't get zone chat. Exiting the game and reentering fixes the problem.

It's not just zone chat, having issues targeting objects for mishes as well. Tried logging out and back in, same issues with chat and targeting objects.