Can I add a card again if I deleted it once?

Yes. There are two ways you can add your Zing card to your Apple Wallet:

Via Zing

1. Open Zing
2. Tap the ‘Card’ tab
3. Tap ‘Add to Apple Wallet’
4. Follow the instructions
5. Go to the 'Wallet' app on your iPhone to check your Zing card is in there

Via the Wallet app on your iPhone:

1. Open your ‘Wallet’ app
2. Tap the '+' icon in the top right corner
3. Go to the ‘Debit or Credit Card’ section and choose Zing from the list or type ‘Zing’ into the search bar
4. Follow the instructions. You may need to scan your card or enter the details manually.