If it is the first payment for the subscription, the end-user will receive a “plan order receipt” email informing them that the payment was successfully processed. There will also be a PDF receipt attached to this email.
For all subsequent payments, the end-user will not receive a payment confirmation email from Gigs. Any additional payment receipts can be obtained from either the Gigs dashboard by you, or via Connect by the user. Instructions can be found here.
If the payment is unsuccessful at time of the first check-out for the first payment on a subscription, the end-user will receive a payment error message via the Connect portal. Their subscription will not activate until there is a valid payment method entered and a successful payment has been made. Additionally, there is no plan order receipt email until the payment is successfully processed.
If the first payment has failed, the user will have ~23 hours to update and retry the payment manually via the Connect flow. If a successful first payment isn't made within that timeframe, then their subscription will be automatically cancelled. You can read more on this flow here.
For a subscription which has a failed payment in its subsequent payment cycles, the end-user will receive an email informing them of the failed payment and prompt them to update their payment method information.