Currency switcher – PDF invoice issue

Hello,

We are using the plugin Woocommerce PDF Invoices.

In our website Canadian dollar is the main currency and US dollar is secondary currency. When we download generate PDF for orders with main currency, it works okay. But, for orders with US dollars, the PDF invoice shows Canadian dollar and amount also in CAD.

Ironically, on order completion, the PDF invoice attachment which is sent automatically to customer, shows correct currency with correct amount.

It only malfunctions when we generate the invoice from the woocommerce back end.

Thanks
Imran