How to remove the old MyBookLive device out of my ID?

The first time I created the remote access web account to connected with my MyBookLive and activated already. 

But I used the quick factory restore command when I set the setting wrong.

Now with the MyBookLive with the new setting is OK. 

But I loged-in to the WD2go.com and found that the old device still show in my ID.

I need to know how to remove the old MyBookLive device out of my ID?  

or which way to clear everything of my ID or delete my ID, then I will register the ID again with the same e-mail?

Did you ever clear this?