I am using LR mobile on my iPhone 7+ to share pictures with friends. I am able to share the link, they are able to view all the pictures but impossible for them to download them. I found on the web version of LR mobile the box to check in order to allow such a download, but nothing such on my LR app on my iPhone. Any idea? Any way to set the LR preferences in order to allow download in shared collection by default? for web and iPhone version of LR mobile?