To add the QuadPay card to your Apple Wallet you will need to tap the Add to Apple Wallet button on Shop screen.
From the Apple Wallet, tap the plus icon to add your QuadPay card.
You will use your QuadPay card numbers displayed on the Shop screen. Tap the card to copy the card numbers and paste into the Card Details in the Apple Wallet. Do the same for the Expiration Date and Security Code. Your QuadPay card is now in the Wallet!
Once the card is added, it will stay in the Wallet.
If you delete and re-install the QuadPay app for any reason, you will need to delete the card from your Apple wallet and add the card again.