Change "User Name" for "E-mail" in register form

The user resgistered they can´t access.
The user register can´t access because they need user name but hikashop no assigned user name.
Is it possible change user field for Email in access form?

Hi,

I don't understand your message and your request.

HikaShop do not assign a user name if HikaShop does not create a Joomla account during the registration.
So it means that you are using the "guest checkout" and it is fully logical that HikaShop does not create a Joomla account and that the user don't have a login and a password.

Regards,

Ok,
Then when an user visit site for 2nd time, How can he login/register if e-mail exist?

If you are in "no registration" mode, no user account is created. So you simply re-enter your user info, including the same email address in the form and it will work.
If you are in "registration" mode, you need to login with the username/password you used when registering the first time.
If you are in "simplified registration" mode, you need to login with the email you used and the password that was sent to you by email when registering the first time.

Ok,
It was a confusion in language file.
All resolved.
Thank you.