Coupon use zero's final total??

-- url of the page with the problem -- : mywebsite.com/mypage
-- HikaShop version -- : 2.3.0
-- Joomla version -- : 3.3.1
-- PHP version -- : x.x.x
-- Browser(s) name and version -- : XXXXX x.x.x
-- Error-message(debug-mod must be tuned on) -- : Error_message

Hi, I issued a 'coupon' for £45 on it has been used BUT zeroed the 'final total'.
I have issued another one and it does the same (wipes out ALL the total not just the coupon value).
see attached screen dump for settings, all appears to be correct to me?

Hi,

It seems to be indeed well configured, just to be sure, the final total of the order was more than £45 ?
Don't you have enabled a third plugin, or something like that which could interact with the total calculation ?

We are not able the reproduce that issue on our end. So a link to your website could help us.

Hi Xavier, I have just solved this, if I add a coupon for £45 the cart does not just take off £45 from the final total BUT £45 plus VAT!
Which on a £50 purchase left a 0 balance to pay instead of £5

To correct this I have to set the 'tax category' to 'none'

thanks