The “unpaid commission” is granted for orders that were placed and set to the status “completed”.
However, past orders created before you installed the Coupon Affiliates PRO plugin may not have granted any unpaid commission.
There are several ways to fix this by granting the unpaid commission for these past orders manually.
Conceder "Comisiones no pagadas" por pedidos anteriores "Completados" que no fueron concedidos.
Individual Orders
Si tiene algún pedido anterior "Completado" que no se actualizó ni concedió la "comisión no pagada", puede activarlo manualmente editando el pedido y haciendo clic en el enlace "Actualizar" situado junto al importe de la comisión:

Bulk Orders
You can also grant unpaid commission for past orders that have not granted it yet, by going to the “Affiliate Orders” admin page, then in the bulk actions dropdown you can select “Update Unpaid Commission”. Once selected you can then bulk select any past orders that are completed but have still not granted the unpaid commission.

Edit Unpaid Commission Manually
You can edit the “unpaid commission” amount for an affiliate coupon manually if needed.
Simply edit the coupon in WooCommerce, then go to the “Coupon Affiliates & Commission” tab, then you can edit the “Unpaid Commission” amount there.

También puede utilizar la herramienta "editar cupones en bloque" para editar en bloque las comisiones de varios cupones de afiliación: https://couponaffiliates.com/docs/bulk-edit-coupon-settings/