Xcode 9 here. I'm tyring to play around with ARKit and just want to deploy a simple ARKit app to my personal device (iPhone 7+ that I upgraded to iOS 11). I created a new Augmented Reality app project, connected my iPhone to my laptop and went to Product >> Archive.
Xcode created an archive and I'm looking at this window now:
https://i.stack.imgur.com/7KZ26.png
The next step is to do an ad hoc distribution/export of the archive to my iPhone, however both the Validate and Export buttons are disabled. How can I fix this?