Hello,
I am confused. Why are you looking for those lines? You should be looking for
<?php
$this->vmcartPrices['salesPriceCoupon'] =...
?>
To fix the problem with the coupon being added instead of subtracted.
In 2.0.9 pro, you should find the lines around 1576, you want to change
<?php
$this->vmcartPrices['couponTax'] = $product_couponTax + $shipping_couponTax;
$this->vmcartPrices['couponValue'] = $product_couponValue + $shipping_couponValue - $this->vmcartPrices['couponTax'];
$this->vmcartPrices['salesPriceCoupon'] = $salesPriceCoupon;
?>
to
<?php
$this->vmcartPrices['couponTax'] = $product_couponTax + $shipping_couponTax *-1;
$this->vmcartPrices['couponValue'] = $product_couponValue + $shipping_couponValue - $this->vmcartPrices['couponTax'] *-1;
$this->vmcartPrices['salesPriceCoupon'] = $salesPriceCoupon *-1;
?>
Another solution would be to upgrade your version of AwoCoupon Pro.