PDF Plugin - add customer email address

-- HikaShop version -- : 2.6.3
-- Joomla version -- : 3.5.1
-- Browser(s) name and version -- : Firefox 47.0

I installed the PDF Plugin feature so I could select all orders and create PDF invoices all at one time as opposed to opening each order and printing the invoices one at a time.

How can I alter the PDF Plugin invoice so that the customer email address is displayed? I have researched this topic in the forums and found this solution from 2014:

www.hikashop.com/forum/4-how-to/51940-ho...-invoice.html#166422

However, adding that code did not solve my problem. Is there another solution? Please advise.

I found the file via FTP - thank you. I had updated the invoice file but not found attachinvoice.php.

As I am not very familiar with PHP, could you advise where I would insert this code snippet? Thank you.

I cannot locate <table class="addresses"> in the file plugins/hikashop/attachinvoice/attachinvoice/invoice.php.

I checked for the media/com_hikashop/plugins/invoice.php to be sure that I hadn't created an override, but that file (and plugins folder) does not exist.

I would like to add the email address below the telephone number. I have attached a PDF to indicate which file I am trying to edit.