Hi,
1. Thanks, I'm able to see the problem with that KS-00039 order.
So I tried to access your FTP server in order to debug the issue but I wasn't able to connect to it:
take.ms/n0hyo
Maybe the host should be different than the domain name, but you didn't provide the host for the FTP access.
2. Try changing the line:
echo '<p>'.$fieldsClass->getFieldName($field).': '.$fieldsClass->show($field,$product->$namekey).'</p>';
to:
echo '<p>'.$this->str_split_unicode(strip_tags($fieldsClass->getFieldName($field).': '.$fieldsClass->show($field,$product->$namekey)),50).'</p>';
in the file plugins/hikashop/attachinvoice/attachinvoice/invoice.php and that should prevent that.