The patron does not receive any additional notification when the unresolved online sales order is resolved or even if it is cancelled (although their credit card will be refunded if the order is cancelled).  In an unresolved online sales order, the patron's credit card stays charged the entire time, so they will not see a new charge on their credit card or any additional notifications when it is resolved.  The only thing that occurs when the unresolved online sales order is resolved is that there is an order created in Altru under their constituent record.

Because organizations do not receive a notification when they have an unresolved online sales order, we strongly recommend checking in Sales > Unresolved Online Sales Orders daily or at least weekly because not resolving them can affect things like rosters for classes and even financial reconciliation.