Is your Mac running El Capitan? If so there are a variety of problems with using El Capitan with the My Cloud.
Here is one such recent thread (there are many others that can be found via the forum search feature. However, Safepoint should operate independently of the computer OS since it runs from the WD My Cloud to the attached or network backup location.
https://community.wd.com/t/support-os-x-el-capitan/96744/116
