How can I upload a screencast of how I use the Instagram Public Content Access permission, when there is no way to test this permission without requesting for App Review?!
You don't need to demo the functionality live -- just provide enough info to the review team about how you intend to use the feature. You can use mockups or your own data and that should suffice. Just make it clear that you can't actually use live data because you need the permission.
Great, thanks for your answer that wasn't very clear on the documentation.