Finding the Bitcoin Address on a BitPay Invoice

Where is it?

Take your existing Bitpay URL, something like:

https://bitpay.com/invoice?id=INVOICEID

Adjust it so that it changes into:

https://bitpay.com/invoiceData/INVOIDEID?poll=false

It will then list out in plain details what bitcoin address you should send to. You need to just look for paymentUrls and the address should be there.