@normski4ash, STOP trying to access your My Cloud through the WD2Go.com website UNTIL you figure your problems on the local network with trying to access the My Cloud. Get the My Cloud working properly on the local network FIRST before messing around with remote access through the WD2Go.com web portal.
Have you tried accessing the My Cloud Shares as mentioned above using smb:// or afp:// on your Mac’s?
If using El Capitan have you reviewed the huge El Capitan thread to see if anything in there is of use in your situation?
https://community.wd.com/t/support-os-x-el-capitan/96744
Have you tried mapping a Share to make access easier?
