Coupons not getting generated

If you have set up the automatic coupons option from the Coupons tab, but the coupons are still not getting generated for affiliates (and you are not able to assign them manually too):

That usually happens because of the permissions, please see if the below resolves it:

The permissions provided in your Woocommerce API key are read only. So the app can't create coupon codes.

To rectify this, login to your dashboard at https://goaffpro.com/merchant and then press the settings icon (see attached screenshot) to re-do the Woocommerce integration.