title: No valid iOS code signing keys found in keychain
body: <p>I can Archive and Publish an app in debug mode, but when switched to App Mode i get the following error:</p>
  
  <p>/Library/Frameworks/Mono.framework/External/xbuild/Xamarin/iOS/Xamarin.iOS.Common.targets: Error: No valid iOS code signing keys found in keychain. You need to request a codesigning certificate from <a href="https://developer.apple.com" rel="noreferrer">https://developer.apple.com</a>.</p>
  
  <p>the attached file shows i do have the relevant Certificates but Xamarin keeps complaining</p>
  
  <p>The app has been successfully published before but using a different profile on the same mac. Both users key chains contain the same certificates</p>
  
  <p><a href="https://i.stack.imgur.com/Sngmv.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Sngmv.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/sSxvw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/sSxvw.png" alt="enter image description here"></a></p>