Hello,
Another user posted a similar question. Take a look at his thread.
http://community.wd.com/t5/WD-My-Cloud-Mobile-Apps/WD-Photos-IOS-upload/m-p/682709/highlight/true#M3819
You can also take a look at this thread.
http://community.wd.com/t5/WD-My-Cloud-Mobile-Apps/Iphone-auto-sync-camera-roll-and-WD-Photos-uploads-to-public/m-p/617957/highlight/true#M3141