Username in registration form is not showed

[henryz4]

Hi everyone, I am reading your forum frequently as I  have developed my personal web shop.
I am a kind of newbie to these things, but everything was going quite good until a week ago:
- I Installed the plugin: Authentication - Email to help my customer to login properly without username but using just the email.
- I somehow must have made a mistake where I erased the "username" field from the registration form and now users are no more able to register themselves. They can buy (without registering) but they cannot register.

I have a version of the website working on my local machine so I could take it back... If only I know how to do it!!

I know this is not a big deal for you, but this things is driving me crazy and I cannot understand how to switch it back.

The link to the registration form where you can see the problem is: http://shop.sandokan.com/component/virtuemart/view/user/layout/editaddress.html

Thank you very much in advance

[GJC Web Design]

how did you "erase"  the username?