I have a 3TB wdmycloud and already installed correctly , where ftp and port forwarding is set up . wdmycloud locally accessible but can not be read from the outside . it is very frustrating . I tried and found that it looks like there is an error on the server of wd2go.com. for those who want to run a remote device but still get the error cos of the lack of improvement of wd , maybe you can try this simple way .
1 . still login to wd2go.com, locally or remotely
2 . Choose the device you want to open
3 . When there is no response from wd site says "this webpage is not available " try to copy the url address that is listed in the address bar and replace several lines of sections with your public IP address (you can find it in http://www.whatismyip.com/)) or you local WD IP if you wan to connect locally
https://xxxxxx.device13xx55.wd2go(dot)com/LandingPage?deviceUserId= 70xxxx85deviceUserAuthCode= 47a5b65c470xxxxxxxxxfd4476bc741
replaced the first address until /LandingPage by :
where 192.168.0.1 is your public IP (or local WD IP if you can’t access from your network)
so maybe this is the simple way to make your WD act like a data cloud, until WD team fixes trouble in their ddns management system in wd2go.com