I've added an option for a discount coupon at my Magento admin panel.
At the checkout, when coupon code is applied, a discount is shown but not calculated to a total value (as shown below).
Any clues what went wrong?
Thanks for your help, d
It is a random Issue, does not always happen. Will work one day and then not the next.
The only extra modules I have installed are:
Amasty Customer Attributes
Magestore Inventory Manager
IWD Order Manager
Paradox Labs Authorize.net Payment module