Alternatively, if you are on a Pro or Elite plan, you can download the raw Join Code at any time from your Merchant Console.
Instructions how to download your Join Code:
Log in to your Merchant Console
Select Stamp Cards from the left hand side menu
If you have multiple stamp cards, navigate between the tabs to find the offer you wish to download the code for. If you only have one Stamp Card, this is not applicable
Press view next to the corresponding Join Code you wish to download
Right click on the QR Code
Select save image as
Rename or select download location, if relevant.