When paying with Apirone, the QR code is generated locally via the Google Maps API. On the sale update screen in the
admin CP, an option will appear for you to view the QR code, but only when viewing sale statuses that where the
sale is not active (eg: Waiting for Callback).
This is useful if you need to send the link to a buyer again. The format for the QR code is:
index.php?qr=ORDERID-ORDERCODE
Both order ID and order Code can be found in the sales table in your database (for advanced users).
If you are changing the QR code layout, the size of the QR code can be changed in the following file:
control/classes/gateways/class.apirone.php