macchi

Dear Wasantec,
Sorry I don’t understand what you mean.
But perhaps I have a solution for you, please read below.
Kind regards,
/Macchi

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Disclaimer: This is only a humble suggestion since I am not a developer of this plugin. Make a backup of everything before any changes and be very careful with the code. Otherwise your site and shop may crash completely.
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This plugging has numerical errors on rounding, thus I had I had to edit the code to make the following corrections on the woo commerce-bulk-discount.php:

1) Minimize numeric errors:
Change all (four) usages of the function “round(__something__,2)” in the code to “round(__something__,10). This reduced rounding errors.

2) Adjust number os decimals for discount in the cart:
At the function “filter_subtotal_price()”, near the line number 232 you may change the usages of the function “round(__something__,2)” in the code to “round(__something__,0). Then the discount will be shown without decimals rounded to the nearest integer.

As I mentioned I am not a developer of this plugin, but hope this helps. Please double check your code and calculation results before releasing changes into your production environment.