I sent a note to a cousin earlier today telling them about WikiTree. I told them if they were interested I would send them an invitation to join. I tried to do that just now by adding their email address to the profile I created for them but the system responds with an error saying that email address is already in use by a guest profile, i.e. Pennington-1194. What now? Do we need to merge Pennington-1174 into 1194? Or did I somehow hit enter twice? Color me "confused."