This is a bit of a long shot, but I've posted the following question on the Joomlapolis forum a couple of days ago & so far no response.
I'm using Joomla 3.4 & Community Builder Pro 2.0.7. I am trying to get the registration so I can use the email address as the username. On Configuration > General I have Login method set to Email Address, on Configuration > User Profile I have Username Fallback set to Email, in Field Management username is not required & not shown on Profile, Registration, or Edit. From what I've read on the Joomlapolis forum that should make the username populate from the Email field, but it isn't working.
I've also tried using CB Auto Actions to set the username field to email on both Start Save Registration and After Frontend Registration, but whatever I do I just get the following error message: "The username '' is already in use."
Can someone tell me how to make this work? I know that Community Builder is supposed to be able to do this out of the box, but I'm just going round and round in circles here. I'd rather not hack the code as the client needs to be able to update the components when patches/updates are released.