If you made changes but want past orders to be updated to the new rates, then you may need to refresh the statistics.
You can do this by editing the individual coupon code and click the “REFRESH ALL DATA” link:
Or you can refresh stats for all your coupons in the “Debug” settings tab:
Note that this will refresh all stats for all past orders, unless you have enabled the option: “Never update the saved “commission” value for past orders.”
