Payment due is wrong

Hi

Look at image in it all information like subtotal, discount, bank transfer and etc. The payment due calculating wrong. it should be $143.88. What is has else here ?

My first reflection is, why is discount not a negative amount?
Is the calculation correct without the discount? Is the bank transfer fee supposed o be a discount?
Are these unmodified core files and add-ons? Or are there modifications that can interfere?

discount is working wrong but I didn't get still why?

Show your discount code confiuration

here they are

the last side

The problem in discount, look at image I added it 20.00 but it is changing to 80.032.

When I added discount as % it is working correct but in currency it is not.

And in currency it is the store currency amount you added?

sure

what do you think where is the problem ?

I can't confirm an issue. I just created a fixed discount of 50 SEK. And it correctly withdraws 50 (and the corresponding tax 25%, so 62,75 SEK).
I tried in a different currency and currency conversion is right as well.

I use this addon https://www.litecart.net/en/addons/35/discount-codes . Do you use also that ?

Yes