The trigger Customer Before Saved Card Expiry can be used to create a workflow that runs a set number of days before a customer’s saved card expires.
Unfortunately, not every payment gateway is compatible with this trigger because sometimes different gateways store the card tokens in different ways. We support any payment gateways that use the WooCommerce native token storage method which was added in WooCommerce 2.6. Many plugins were created before this version of WooCommerce and do not use the native method.
If you are unsure whether your payment gateway uses the new or old method please contact the developer of your payment gateway plugin.