Hi,
I guess that you could replace that code by:
<table class="w550" border="0" cellspacing="0" cellpadding="0" width="550" style="margin-top:10px;font-family: Arial, Helvetica, sans-serif;font-size:12px;line-height:18px;">
<tr>
<!--{IF:BILLING_ADDRESS}--><td style="color:#1c8faf !important;font-size:12px;font-weight:bold;">{TXT:BILLING_ADDRESS}</td><!--{ENDIF:BILLING_ADDRESS}-->
<!--{IF:SHIPPING}--><!--{IF:SHIPPING_ADDRESS}--><td style="color:#1c8faf !important;font-size:12px;font-weight:bold;">{TXT:SHIPPING_ADDRESS}</td><!--{ENDIF:SHIPPING_ADDRESS}--><!--{ENDIF:SHIPPING}-->
</tr>
<tr>
<!--{IF:BILLING_ADDRESS}--><td>{VAR:SHIPPING_ADDRESS}</td><!--{ENDIF:BILLING_ADDRESS}-->
<!--{IF:SHIPPING}--><!--{IF:SHIPPING_ADDRESS}--><td>{VAR:SHIPPING_ADDRESS}</td><!--{ENDIF:SHIPPING_ADDRESS}--><!--{ENDIF:SHIPPING}-->
</tr>
</table>
Please note that when you update HikaShop, you'll loose your change if you edit directly the file while you won't if you do it via the menu System>Emails (Business edition only) as it saves the changes as an override.