Hi Jerome. Turning off the checkout legacy is on my to-do list but i have a ton of custom styles for the legacy checkout that it will take some time to convert over.
However, you can easily add a submit cc info button on the ccinfo view by adding the following code after the last, closing table tag:
<?php
if(empty($cc_data)) {
?>
<div class="hikashop_checkout_payment_submit">
<button class="<?php echo $this->config->get('css_button','hikabtn'); ?> hikabtn_checkout_payment_submit" onclick="return window.checkout.submitPayment(<?php echo $this->step; ?>,<?php echo $this->module_position; ?>);"><?php echo JText::_('HIKA_SUBMIT'); ?></button>
</div>
<?php
} else {
?>
<div class="hikashop_checkout_payment_submit">
<button class="<?php echo $this->config->get('css_button','hikabtn'); ?> hikabtn_checkout_payment_reset" onclick="return window.checkout.resetPayment(<?php echo $this->step; ?>,<?php echo $this->module_position; ?>,<?php echo $payment->payment_id; ?>);"><?php echo JText::_('RESET'); ?></button>
</div>
<?php
}
?>
After making a few test purchases, this seems to be a valid (temporary) solution for the legacy checkout. Again, I will be turning off legacy in the near future after I get all of the styles configured for the new checkout system.