Quantity based discount not applying

Hi there,

I am trying to use this app, but when setting a simple quantity based rule, it is not applying. The quantity table is showing on the product page when it is enabled, so I know it is set up at least half right.

My rule is simple,

0 – 999 – ￡0.10
1000 – 2499 – ￡0.09

But when I go over 1000 quantity, it still stays at 0.10 not 0.09

Can anyone help please?