Problème dans la création d'un compte utilisateur

<?php
/**
 * @package	HikaShop for Joomla!
 * @version	3.2.2
 * @author	hikashop.com
 * @copyright	(C) 2010-2018 HIKARI SOFTWARE. All rights reserved.
 * @license	GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html
 */
defined('_JEXEC') or die('Restricted access');
?><?php
if(!$this->identified){
	$this->nextButton = false;
	$params = null; $js = null;
	$classLogin = "hikashop_hidden_checkout";
	$classRegistration = "";
	$defaultSelection = '2';
	$span='';

	$display_login = $this->config->get('display_login',1);

	$sr = explode(',', $this->simplified_registration);
	$this->registration = array(0=>false,1=>false,2=>false,3=>false);
	foreach($sr as $r) {
		$this->registration[ (int)$r ] = true;
	}
	$registration_count = count($sr);

	if($display_login){
		$classLogin = '';
		$classRegistration = 'hikashop_hidden_checkout';
		$defaultSelection = 'login';
	}

	if($this->display_method == 0) {
?>
	<!-- CLASSIC DISPLAY-->
<?php
		if($display_login) {
 			if($this->registration[2]){
 				echo '<h1>'.JText::_('LOGIN_OR_GUEST').'</h1>';
			} else {
				echo '<h1>'.JText::_('LOGIN_OR_REGISTER_ACCOUNT').'</h1>';
			}
		}
?>
	<div id="hikashop_checkout_login" class="hikashop_checkout_login row-fluid">
	<?php
		if($display_login) {
	?>
		<div id="hikashop_checkout_login_left_part" class="hikashop_checkout_login_left_part span4">
			<fieldset class="input">
				<h2><?php echo JText::_('HIKA_LOGIN');?></h2>
				<?php echo $this->loadTemplate('form');	?>
			</fieldset>
		</div>
	<?php } ?>
		<div id="hikashop_checkout_login_right_part" class="hikashop_checkout_login_right_part span8">
			<fieldset class="input">
				<h2><?php
					if($this->registration[2]) {
						echo JText::_('GUEST');
					} else {
						echo JText::_('HIKA_REGISTRATION');
					}
				?></h2>
<?php
			$usersConfig = JComponentHelper::getParams( 'com_users' );
			$allowRegistration = $usersConfig->get('allowUserRegistration');
			if($allowRegistration || $this->registration[2]){
				echo hikashop_getLayout('user','registration',$params,$js);
			}else{
				echo JText::_('REGISTRATION_NOT_ALLOWED');
			}
?>
			</fieldset>
		</div>
	</div>
	<input type="hidden" id="login_view_action" name="login_view_action" value="" />
	<div style="clear:both"></div><br/>
<?php

	}else{

		if($display_login && ($this->registration[0] || $this->registration[1] || $this->registration[3]) && $this->registration[2])
			echo '<h1>'.JText::_('LOGIN_OR_REGISTER_ACCOUNT_OR_GUEST').'</h1>';
		else if($display_login && ($this->registration[0] || $this->registration[1] || $this->registration[3]))
			echo '<h1>'.JText::_('LOGIN_OR_REGISTER_ACCOUNT').'</h1>';
		else if($display_login && $this->registration[2])
			echo '<h1>'.JText::_('LOGIN_OR_GUEST').'</h1>';
		else if(!$display_login && ($this->registration[0] || $this->registration[1] || $this->registration[3]) && $this->registration[2])
			echo '<h1>'.JText::_('REGISTER_ACCOUNT_OR_GUEST').'</h1>';

?>
	<!-- THIS IS THE SWITCHER DISPLAY, RADIO BUTTON ON THE LEFT, FORMS ON THE RIGHT-->
	<div id="hikashop_checkout_login" class="hikashop_checkout_login row-fluid">
<?php
		if($this->display_method == 1 && (($display_login && $registration_count > 0) || $registration_count > 1)) {
			$span='span8';
?>
		<div id="hikashop_checkout_login_left_part" class="hikashop_checkout_login_left_part span4">
			<fieldset class="input">
				<h2><?php echo JText::_('IDENTIFICATION');?></h2>
<?php
	$values = array();
	$v = null;
	if($display_login) {
		$v = JHTML::_('select.option', 'login', JText::_('HIKA_LOGIN').'<br/>');
		$v->class = 'hikabtn-checkout-login';
		$values[] = $v;
	}
	if($this->registration[0]){
		$v = JHTML::_('select.option', 0, JText::_('HIKA_REGISTRATION').'<br/>');
		$v->class = 'hikabtn-checkout-registration';
		$values[] = $v;
	}
	if($this->registration[1]){
		$v = JHTML::_('select.option', 1, JText::_('HIKA_REGISTRATION').'<br/>');
		$v->class = 'hikabtn-checkout-simplified';
		$values[] = $v;
	}
	if($this->registration[3]){
		$v = JHTML::_('select.option', 3, JText::_('HIKA_REGISTRATION').'<br/>');
		$v->class = 'hikabtn-checkout-simplified-pwd';
		$values[] = $v;
	}
	if($this->registration[2]){
		$v = JHTML::_('select.option', 2, JText::_('GUEST').'<br/>');
		$v->class = 'hikabtn-checkout-guest';
		$values[] = $v;
	}
	$defaultSelection = $this->config->get('default_registration_view','login');
	if(empty($defaultSelection)){
		$defaultSelection = 'login';
	}

	$js = "
	window.hikashop.ready( function(){
		var currentRegistrationSelection = window.document.getElementById('data_register_registration_method".$defaultSelection."');
		if(!currentRegistrationSelection) currentRegistrationSelection = window.document.getElementById('data[register][registration_method]".$defaultSelection."');
		displayRegistration(currentRegistrationSelection);
	});";
	$doc = JFactory::getDocument();
	$doc->addScriptDeclaration("\n<!--\n".$js."\n//-->\n");
	echo JHTML::_('hikaselect.radiolist',  $values, 'data[register][registration_method]', ' onchange="displayRegistration(this)"', 'value', 'text', $defaultSelection, false, false, true );
?>
			</fieldset>
		</div>
		<?php } ?>
		<div id="hikashop_checkout_login_right_part" class="hikashop_checkout_login_right_part <?php echo $span; ?>">
			<div id="hikashop_checkout_registration" class="<?php echo $classRegistration; ?>">
				<fieldset class="input">
					<h2 id="hika_registration_type"><?php
						if($this->registration[2] && $registration_count == 1) {
					 		echo JText::_('GUEST');
						} else {
							echo JText::_('HIKA_REGISTRATION');
						}
					?></h2>
<?php
	$usersConfig = JComponentHelper::getParams( 'com_users' );
	$allowRegistration = $usersConfig->get('allowUserRegistration');
	if ($allowRegistration || $this->registration[2]) {
		echo hikashop_getLayout('user','registration',$params,$js);
	} else {
		echo JText::_('REGISTRATION_NOT_ALLOWED');
	}
?>
				</fieldset>
			</div>
<?php if($display_login){ ?>
			<div id="hikashop_checkout_login_form" class=" <?php echo $classLogin; ?>">
				<fieldset class="input">
					<h2><?php echo JText::_('HIKA_LOGIN');?></h2>
					<?php echo $this->loadTemplate('form');	?>
				</fieldset>
			</div>
<?php } ?>
		</div>
	</div>
	<input type="hidden" id="login_view_action" name="login_view_action" value="" />
	<div style="clear:both"></div><br/>
<?php }
}?>


Code: checkout / login_form.php

<?php
/**
 * @package	HikaShop for Joomla!
 * @version	3.2.2
 * @author	hikashop.com
 * @copyright	(C) 2010-2018 HIKARI SOFTWARE. All rights reserved.
 * @license	GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html
 */
defined('_JEXEC') or die('Restricted access');
?><?php
if(JPluginHelper::isEnabled('authentication', 'openid')) {
	$lang = &JFactory::getLanguage();
	$lang->load( 'plg_authentication_openid', JPATH_ADMINISTRATOR );
	$langScript = 	'var JLanguage = {};'.
		' JLanguage.WHAT_IS_OPENID = \''.JText::_( 'WHAT_IS_OPENID' ).'\';'.
		' JLanguage.LOGIN_WITH_OPENID = \''.JText::_( 'LOGIN_WITH_OPENID' ).'\';'.
		' JLanguage.NORMAL_LOGIN = \''.JText::_( 'NORMAL_LOGIN' ).'\';'.
		' var comlogin = 1;';
	$document = &JFactory::getDocument();
	$document->addScriptDeclaration( $langScript );
	JHTML::_('script', 'openid.js');
}
if(!HIKASHOP_RESPONSIVE) {
?>

	<p id="com-form-login-username">
		<label for="username"><?php echo JText::_('HIKA_USERNAME') ?></label><br />
		<input name="username" id="username" type="text" class="inputbox" alt="username" size="18" />
	</p>
	<p id="com-form-login-password">
		<label for="passwd"><?php echo JText::_('HIKA_PASSWORD') ?></label><br />
		<input type="password" id="passwd" name="passwd" class="inputbox" size="18" alt="password" />
	</p>
	<?php if(JPluginHelper::isEnabled('system', 'remember')) : ?>
	<p id="com-form-login-remember">
		<label for="remember"><?php echo JText::_('HIKA_REMEMBER_ME') ?></label>
		<input type="checkbox" id="remember" name="remember" value="yes" alt="Remember Me" />
	</p>
	<?php endif; ?>
	<?php
		echo $this->cart->displayButton(JText::_('HIKA_LOGIN'),'login',@$this->params,'',' hikashopSubmitForm(\'hikashop_checkout_form\', \'login\'); return false;');
		$button = $this->config->get('button_style','normal');
	 	if ($button=='css')
			echo '<input type="submit" style="position: absolute; left: -9999px; width: 1px; height: 1px;"/></input>';
	?>
<?php
if(!HIKASHOP_J16){
	$reset = 'index.php?option=com_user&view=reset';
	$remind = 'index.php?option=com_user&view=remind';
}else{
	$reset = 'index.php?option=com_users&view=reset';
	$remind = 'index.php?option=com_users&view=remind';
}
?>
<ul>
	<li>
		<a href="<?php echo JRoute::_( $reset ); ?>">
		<?php echo JText::_('HIKA_FORGOT_YOUR_PASSWORD'); ?></a>
	</li>
	<li>
		<a href="<?php echo JRoute::_( $remind ); ?>">
		<?php echo JText::_('HIKA_FORGOT_YOUR_USERNAME'); ?></a>
	</li>
</ul>
<?php } else { ?>
<div class="userdata form-inline">
	<div id="form-login-username" class="control-group">
		<div class="controls">
			<div class="input-prepend input-append">
				<span class="add-on">
					<i class="icon-user tip" title="<?php echo JText::_('HIKA_USERNAME'); ?>"></i>
					<label for="modlgn-username" class="element-invisible"><?php echo JText::_('HIKA_USERNAME'); ?></label>
				</span>
				<input id="modlgn-username" type="text" name="username" class="input-small" tabindex="1" size="18" placeholder="<?php echo JText::_('HIKA_USERNAME'); ?>" />
				<a href="<?php echo JRoute::_('index.php?option=com_users&view=remind');?>" class="btn hasTooltip" title="<?php echo JText::_('HIKA_FORGOT_YOUR_USERNAME'); ?>"><i class="icon-question-sign"></i></a>
			</div>
		</div>
	</div>
	<div id="form-login-password" class="control-group">
		<div class="controls">
			<div class="input-prepend input-append">
				<span class="add-on">
					<i class="icon-lock tip" title="<?php echo JText::_('HIKA_PASSWORD') ?>"></i>
					<label for="modlgn-passwd" class="element-invisible"><?php echo JText::_('HIKA_PASSWORD') ?></label>
				</span>
				<input id="modlgn-passwd" type="password" name="passwd" class="input-small" tabindex="2" size="18" placeholder="<?php echo JText::_('HIKA_PASSWORD') ?>" />
				<a href="<?php echo JRoute::_('index.php?option=com_users&view=reset');?>" class="btn hasTooltip" title="<?php echo JText::_('HIKA_FORGOT_YOUR_PASSWORD'); ?>"><i class="icon-question-sign"></i></a>
			</div>
		</div>
	</div>
<?php if(JPluginHelper::isEnabled('system', 'remember')) { ?>
	<div id="form-login-remember" class="control-group checkbox">
		<label for="modlgn-remember" class="control-label"><?php echo JText::_('HIKA_REMEMBER_ME') ?></label>
		<input id="modlgn-remember" type="checkbox" name="remember" value="yes"/>
	</div>
<?php } ?>
	<div id="form-login-submit" class="control-group">
		<div class="controls">
			<?php echo $this->cart->displayButton(JText::_('HIKA_LOGIN'), 'login', @$this->params, '',' var b = document.getElementById(\'login_view_action\'); if(b) { b.value = \'login\'; } document.hikashop_checkout_form.submit(); return false;','', 0, 1, 'btn btn-primary'); ?>
		</div>
	</div>
</div>
<?php } ?>