Currently there is no official method for remote drive mapping a My Cloud. WD removed that capability from the WD2Go.com/MyCloud.com website a year ago. To map the My Cloud while on the same local network
http://support.wdc.com/KnowledgeBase/answer.aspx?ID=2686
Unofficially, and absolutely not supported by WD; one. if they are running the older gen v4.x single bay My Cloud, can install the CloudDAVMod and then remote map their My Cloud.
https://community.wd.com/t/app-clouddavmod-v1-0-for-firmware-v4-05-2016/161543
