title: Endless "Inviting"; while creating a Sandbox tester account
body: <p>When I want to create a Sandbox tester for an iOS app of mine, I find myself in front of an endlessy spinning Inviting button.</p>
  <p>Has anyone had this experience?</p>
  <p>What are we supposed to do to solve this issue?</p>
  <p>Since the mail address is not even supposed to be a real one.
  I can't really see what it could be waiting for.</p>
  <p>Beside I have created Sandbox testers accounts before and do not remember having seen this problem.</p>