Product Vendors for WooCommerce

My problem :
As you know, I use Product Vendor + Booking where I take 10% commission.

I would like to set up promotional codes for customers. However, I don’t want this code to be applied to the seller’s margin but to my own 10%.

Support answer :
Hmmm… that’s an interesting use case. I completely understand how it’d be useful. If you’re offering the coupon as the shop owner, it makes sense it doesn’t impact the provider’s commission. Also, if they’re offering coupons it’d make sense that it doesn’t impact yours.