title: Can't upload screenshots to iTunes Connect
body: <p>I want to upload an update for my app. The build is already approved and I want to upload screenshots for all the devices. Now the problem is that when I want to upload the screenshots iTunes Connect it says</p>
  
  <blockquote>
    <p>Screenshots may not contain transparencies or alpha channels.</p>
  </blockquote>
  
  <p>Same goes for my large icon I wanted to add to a new app I created. There were DEFINITELY no alpha channels or transparencies in any image I tried to upload.</p>
  
  <p>So does anyone know how to fix this?</p>
  
  <p>(I thought iTunes Connect had an error so I waited a day but that did not help...)</p>