Thank you for your answer.
I think i've located the part of the code that displays shipping addresses and billing addresses, could you please tell if it's correct?
This is part of the template "ORDER_NOTIFICATION_SUBJECT". I've checked also the "ORDER_CREATION_NOTIFICATION_SUBJECT" and the "ORDER_STATUS_NOTIFICATION_SUBJECT", and the code is pretty much the same:
<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:BILLING_ADDRESS}</td><!--{ENDIF:BILLING_ADDRESS}-->
<!--{IF:SHIPPING}--><!--{IF:SHIPPING_ADDRESS}--><td>{VAR:SHIPPING_ADDRESS}</td><!--{ENDIF:SHIPPING_ADDRESS}--><!--{ENDIF:SHIPPING}-->
</tr>
</table>
The specific template has been changed, but i don't think we touched that part. We changed only some texts and little parts of the layout.
If you aren't sure if something important has been changed, can you please send me a correct, unchanged email template?
Thank you again