For all future transactions, you can set the correct commission amount in the individual client record.
Find the client record by clicking ‘View Active‘ in the Members/Subscribers area of the Overview menu for the offer, or by doing a client search by email address under Manage >> Clients.
Click the ‘Edit‘ link by the client’s name in the resulting client list.
Near the bottom of the client record, you’ll find either a ‘Recurring Billing Details‘ section (for Credit Card and Stripe) or a ‘Recurring Commission Details‘ section (for PayPal Standard).
Either way, edit the ‘Recurring Affiliate Commission‘ field for the amount you want, and save. This will take effect for all future recurring transaction for that client record.
For commissions of transactions that have already occurred, the best option currently is to decline the commission and pay the correct commission amount outside of the system.
(In the near future, it will be possible to modify unpaid commissions for transactions… however, Nanacast support cannot provide an ETA at this time.)