How does the recurring invoice mode work?
When your customers subscribe in recurring invoices mode and the time comes to pay for their next recurring order, the app will send them an automatic email reminder with the checkout link where they can pay for the recurring order. The app WON'T automatically charge your customers for subscriptions created in this mode. The customers will go to a normal checkout in your store (Shopify Checkout) and will be able to use any payment method you have configured in your store.To start using the app in recurring invoices mode, just create a new subscription rule and select the recurring invoices type when the app asks you what kind of subscription rule you want to create.