Dear Mr. Big,
I certainly don't want you to have trouble with the plugin, though I'm not sure what you mean by keys in the email fields. Can you contact us at http://www.vouchsafe.com/contact and describe what is happening in a little more detail? We'll do our best to determine what's happening and get a fix for you right away. If this is something that applies to all instances of the plugin, we'll post our solution here for other readers.