I got my app approved for unlisted distribution, but my distribution was set to Private (which seemed to make the most sense). They said it needed to be resubmitted with Public distribution.
So I resubmitted with Public distribution. And then my app was rejected for unlisted distribution BECAUSE it was marked for public distribution.
I replied to the rejection pointing out that they were sending me in circles.
They rejected my app AGAIN, but this time said "We need additional time to evaluate your submission."
That was a week ago. Sigh!