Afterpay charged the the lower price than the original price of the product

Hi admin,

We had a serious problem with Afterpay plugin on our website.

For example, our product’s price is 79.95$, but when customer places an order on our website by using Afterpay, the final price he got it was only 59.95$ without any coupon code was applied.

Can I know what was wrong with Afterpay plugin. While other payment methods are still working well.

Looking forward to hearing from you.

Thanks and best regards,

Diep Ba Bui