List on your phone
Scan with your camera to open the list flow. Your listings will appear in your profile.
QR opens: https://www.cardtradersclub.com/sell
If Safari says "the URL can't be shown" when you scan, tap Copy link and send the URL to your phone (e.g. text or email), then open it in Safari.
Use the same email to sign in on your phone so your listings stay in your profile.