Username field is not shown in Woocommerce’s registration contact form

I’m working on a Woocommerce website and I just came across this problem:

when I go to Account page and I’m asked to create a new account, in the form there isn’t the “Username” field. There are just these fields:

• Email (default of Woocommerce)
• Password (default of Woocommerce)
• School number (custom field added with FMA Additional Registration Attributes(Free))

I don’t get why I’m not asked to create a username as well. Every time an account is created, I get automatically the first part of the email as username.

Example:
If I created an account with this email: test.test@gmail.com, I’d get this username: test.test

I don’t want WordPress to create it automatically for me, I’d like to allow the user to create their own username.

I tried to open this file: woocommerce/myaccount/form-login.php

and I edited this line by commenting the IF:

    <?php //if ( 'no' === get_option( 'woocommerce_registration_generate_username' ) ) : ?>

        <p class="woocommerce-form-row woocommerce-form-row--wide form-row form-row-wide">
            <label for="reg_username"><?php _e( 'Username', 'woocommerce' ); ?> <span class="required">*</span></label>
            <input type="text" class="woocommerce-Input woocommerce-Input--text input-text" name="username" id="reg_username" value="<?php echo ( ! empty( $_POST['username'] ) ) ? esc_attr( $_POST['username'] ) : ''; ?>" />
        </p>

    <?php //endif; ?>

After this, the filed was shown but everything remained the same I could fill out the field but it was completelly useless, woocommerce kept using the email to create the account.

I don’t know where to look at now to solve this issue.

Is there something else useful that I can tell to make you understand better the problem?

I just fund the tricky solution, it was very simple and I did think about it.

I just went to WooCommerce -> Settings -> Accounts and I untick the checkbox for “Automatically generate username from customer email”.

I got the solution from this topic but here the problem was the contrary:

https://stackoverflow.com/questions/32781569/remove-username-field-registration-form-woocommerce