If you decide not to bring the My Cloud back. Then open it. How do you do this ? By using screw driver in the cover and open it slowly.
Then see how you pry out the HDD disk by screwing here and there and some rubber thingies.
Then lift out the HDD and carry it safely to your computer which is off ofcourse. Then open the computer, find a SATA cable and connect this to the mother board, then you connect the HDD to the Sata cable, then you connect a power supply SATA connector to the HDD as well. Then… you start the computer. Thennnn you go to Windows Explorer, then you see the HDD except when it is EXT2,3,4 formatted. But if not just NTFS you will see the HDD in the Explorer something like Drive D, E, F, G, or H, depending how many drives your have in the puter. Then… you open the HDD by clicking on it, thennn, you access your data there and then… you copy and paste it alllll to the C: drive in a TEMP folder. Then… you have back your data. Then screw the WD My Cloud together and bring it back to the shop and get a new one.
Click Kudos if this works, it works, but you just hafta have the guts for it to do it.