discount coupons problems

Hello, these are our details for you to verify that we have already purchased the license.

Now that we have activated your plugin, we are having a serious problem.

We have created discount coupons and when customers apply them to our cart, I don’t know why, that discounts the total value of the product, not just 5 that we have set up. That is, we want it to deduct 5 when someone applies the discount, no matter what the currency is. We deactivated your plugin and now it works fine. How do we make it work again propertly?

Looking forward to hearing from you soon.

Many thanks