Hi,
1.
You need to edit the file "invoice" of the view "order" of your back end template via the menu Display->Views and change the line:
<?php echo JText::_('DATE').': '.hikashop_getDate($this->element->order_created,'%d %B %Y ');?><br/>
to:
<?php echo JText::_('DATE').': '.hikashop_getDate($this->element->order_created,'%d-%m-%Y ');?><br/>
for the invoice of the back end.
2.
To remove the links to the product pages of products in the cart, you will need to edit the file "cart" of the views "product" and "checkout" for your front end template via the menu Display->Views and change the line:
<a href="<?php echo hikashop_completeLink('product&task=show&cid='.$row->product_id.$url_itemid);?>" ><?php echo $row->product_name; ?></a>
to:
<?php echo $row->product_name; ?>
3.
It the file "step" of the view "checkout" and you need to change the code:
<a href="<?php echo hikashop_completeLink('checkout&task=step&step='.$k.$url_itemid);?>">
<?php echo JText::_('HIKASHOP_CHECKOUT_'.strtoupper($step_name));?>
</a>
to:
<?php echo JText::_('HIKASHOP_CHECKOUT_'.strtoupper($step_name));?>