In case the Payzy card is the only card stored in your device's Google Wallet, it automatically be set us the default payment card. You can use the following steps to set your payzy card as default, if there are multiple cards already registered in your Google Wallet.
1. Launch the Google Pay app on your Android device.
2. See the list of cards you have added to Google Wallet and choose the payzy card.
3. Press the three dots on the top right corner and then “Make default for contactless”.
4. Your payzy card is now set as the default for transactions through Google Wallet.
Now, whenever you make a payment using Google Wallet, the payzy card will be automatically selected.