Added a Firmware v2.x My Cloud Specific section to the original post.
The v2.x My Cloud User Manual indicates (see page 62) there may be an SMB setting option under Windows Services (Workgroup) in the Dashboard. If this is the case, try changing the SMB setting from the default of SMB 2 to SMB 1 or SMB 3. Reboot both the Windows 10 computer and the My Cloud and test Windows File Explorer again to see if the My Cloud shows up under Computer.
