Discount code CTWENTY not working

[2303carls]

I've tried using the discount code CTWENTY but keep getting an error message saying code has zero value yet it's supposed to be live until midnight tonight. Any ideas why it's not working or is there an alternative code I can use. Thanks.

[Bradwardine]

I have the same problem - a load of items to buy in my basket but the code doesn't work.