I am using the latest version of Community Builder in Joomla 3.8. I can not update an existing profile because it tells me the email address is already in use when I click on save. Can't clear the email field either because I get an invalid email address. I'm using the "edit profile" type in a menu and the same is true if I try as an administrator un CB's User Management
I found the problem. The users I was trying to update were imported directly into the Users table. If I add a user manually I can update this user without any problem.