❝If you don't want to use the app, ask the buyer to sign a copy of the eBay order form at the time of pickup.❞
– https://www.ebay.com.au/help/selling/shipping-items/setting-shipping-options/local-pickup?id=4181
Note though that you only need the QR code if the buyer has already paid through the eBay checkout process, using one of the following methods:
- Credit card or debit card
- PayPal
- Apple Pay or Google Pay
- Afterpay
- Zip
- eBay gift card or eBay voucher
If the buyer pays cash on pickup or by bank transfer, the QR code isn’t issued and isn’t relevant.
