Woocommerce coupon does not calculate Upsell Funnel un Order bump products

When products are added from the upsells section or order bumps, they are not added to the coupon calculations. For example, if the product is 100 EUR and the upsell at the checkout page is 80 EUR, after we apply a 50% off coupon code, the value that is deducted will be only 50 EUR (which is not 50%).
Please see – https://prnt.sc/XhTQv_9umS3S

I should add that my plugin version differs from the main one because you have provided a custom solution for me. Please refer to this post – https://villatheme.com/supports/topic/allow-users-to-change-quantity-for-order-bumps-at-the-checkout/

I have also added admin credentials.

Let me know.
Thanks!

Rudolfs