@RLMWD
Do you have SMB1 selected. The below link is for Windows 10 but should work for Windows 7 too.
Get My Cloud to show in Windows 10 File Explorer Network - My Cloud OS 3 Personal Cloud Storage / My Cloud - WD Community
If you know the address of your My Cloud and use Twonky add this, :9000 to the end of it.
Have you tried this.
