How do I upload pics to Shutterfly from those stored on my My Cloud drive?

I am trying to make a calendar from pics stored on my MyCloud drive. It almost seems like this cannot be done. The Shutterfly upload asks me to load pics from a location on my PC. The MyCloud drive does not show as a destination. Suggestions please? Is this process possible?

Please see my reply in your other thread on this same subject.
https://community.wd.com/t/how-to-upload-from-pictures-from-mycloud-device-to-shutterly/144645