Quote Originally Posted by dfwfire View Post
But I did not see them say it was back up on twitter
It was actually back up after only a few hours of it being down, so all is well.

At the moment, even if you have all the rewards claimed and still have any pending claims to use, you still cannot use the in-game interface to recruit anyone. So, if this sounds like any of you, you'll either have to contact Blizzard and have them link up accounts for you, or wait until patch 5.4.2 when they "fix" this issue.