title: TestFlight - How to submit for Beta App Review
body: <p>I'm new to TestFlight. I'm setting up beta testing of my new App for external testers. I'm following various guides such as <a href="https://help.apple.com/itunes-connect/developer/#/devdc42b26b8" rel="noreferrer">this</a>. I've uploaded a build and set up external testers. When trying to select a build for testing I'm warned "before your build can be tested, it may have to be approved by Beta App Review".</p>
  
  <p>Fair enough.</p>
  
  <p>When I select the "Next" button a spinning wheel appears and nothing ever seems to happen again. Attached is a screenshot (the screen background is greyed out but you can read it). I've waited, and waited, and waited.....</p>
  
  <p><a href="https://i.stack.imgur.com/3DA56.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/3DA56.jpg" alt="enter image description here"></a></p>
  
  <p>Refreshing the browser doesn't help. There is no feedback from iTunes connect. Shall I just stare at my screen for 1 to 2 days hoping eventually the beta review will happen and the spinning wheel will stop? I think not.</p>
  
  <p>So my question - how do I submit a build for Beta App Review? I see no button anywhere or explanation of the process.</p>