After installing this extension, your store customers can create a username for themselves when registering, and use it to log in to their account.
This module allows customers to log in to the account using the username, both in the "Checkout" section and in the "Account" section.
Also, the possibility of logging in by email is still usable.
Customers can change their username in the account information editing section.

You can edit or add your customers' usernames in the admin panel.
On the customer list page, you will have a new column called "Username". And in the filters section of this page, you have a new filter that you can use to filter customers by "username".

To prevent duplication, If an account is already registered with a "Username", No other account can be created with the same "Username". The customer will see an error message to change the "Username" when he creates an account.

Demo:
Customers list(admin)
username : demo
password : demo

Customer login
username : john
password : 12345

Register Page:


Login Page:


Edit Information Page:


Customer List Page(admin):


See also "Login With Phone Number" module

Extension Installation Guide
Upload the zip file via extensions / Installer / Upload
Once the upload is done, Please go to Extensions / Modifications and hit the refresh button.

For installation and support free click on the "GET SUPPORT" button on this page. or drop me an email: hoseynsabeti9@gmail.com