If you can't add a ZEN card to Google Pay, make sure your device meets the criteria: Remember that Google Pay works on devices with Android 7.0 or later. Make sure your operating system is up to date. Make sure Google Pay supports payments in the country and region you're currently in (external link). Some of the Google Pay features are only available in certain countries. Make sure your device has the NFC function and that it is turned on. Restart your device and after restarting it, try adding the card to Google Pay again.