Currently, for an automatic withdrawal subscription, the invoice is created and charged/paid at the same exact time (to the minute). This means, there is no opportunity for us to send a pdf/link of the invoice before it is marked as paid. This is a functionality for the manual payment subscriptions but not for a automatic payment subscription. Some of our customers need a invoice (that has not been marked as paid) for their bill keeping and we are unable to give them one with a recurring automatic withdrawal subscription.