Wrong currency on emails sent to customers

Hi!! I love how easy is your plugin. I’ve been facing this problem sinse a while.. The confirmation email sent to customers who buy in the second currency I have set in my shop, is wrong.. I have USD dollars as main currency, and argentine peso as second one, but all the order confirmation emails show the price in USD, despite the order was placed in argentine pesos… any idea on how can I fix this?

Thank you in advance!