I cannot access photos from the camera roll - iOS

If you can't select photos from your camera roll on your iPhone, the issue might be caused by the way Apple handles privacy permissions. Unfortunately, it isn't very user-friendly 😐

You can change the permission by locating Reshopper in your iPhone's "Settings." Go to "Settings" -> "Privacy" -> "Photos" -> "Reshopper":

You need to select 'All Photos' to grant access to all images, including any new ones you take.