Advanced Cash on Delivery App doesn't work well with discounted products

Advanced Cash on Delivery App doesn’t work well with discounted products. I have created a discount where a customer gets a gift worth 3000 free when the purchase amount is above 7000. I have set the COD criteria as 0 - 10000 valued orders get COD. So when the total discounted price is less than 10000, the customers are not getting the COD option. Please provide a solution for this.