Problem with new account in virtuemart

Hi,

I have a problem with virtuemart and new account.

Whan I created a account, 2 accounts are created in VM but only one in joomla ???

When I created the first account in VM, one of the 2 account contains "Khanh Le ..." (see attach).

I don't understand what's happening ?

it was a problem in the table vm_user_information.