Hi,
For your HikaSerial question, please use the HikaSerial forum section.
Otherwise I won't be noticed that there is a question for me. The rest of the support team won't be able to answer to HikaSerial question because it is a product only supported by me.
The template in HikaSerial 1.7.4 is not more valid with the new emails for HikaShop 2.2.2
I am currently travelling for the Joomla World Conference so I can't update HikaSerial, as you can image.
For the moment you have to override the view "orderserial | show_email_notification_html " and remove
and the begging and also
</td>
</tr>
<tr>
<td height="10"></td>
</tr>
at the end of the view.
For the translations (which are at this moment HikaShop related questions), please check your translation file, I guess that the translations for "YOUR_ORDER" and "SUMMARY_OF_YOUR_ORDER" are missing.
Regards,