Hey @notverysmort,
Thanks for getting in touch with us here in the Seller Community!
You can create checkout links for your items in your Dashboard, and then turn them into QR codes. Here's how:
1. Head to Checkout Links in your Dashboard.
2. Click Create a Link and chose Sell an Item.
3. Choose the item you'd like to sell and select Create Link once you're done.
Now, you'll be able to create a QR code by hovering over Share and selecting Create QR code
I hope this helps, please let us know how you go!
