Share File As Link - How to Disconnect?

If I share a file as a link (i.e., I use the WD 2Go app to email a link to a file on my mybook), how do expire that link?  

Is there a way to eventually break the link so it doesn’t work anymore?  I don’t want that link to be circulated to other people, and I don’t want the recipient to have access to my mybook indiscriminately.  Is there somewhere I can check on the existing email links and break them?

Thanks in advance!

I have no idea since I  use the free version, the option to email as a link is only available in the Pro version.  I suggest you to contact WD Support to request this information.