I am also having the same problem and will be a make/break thing for me to continue to use this plugin. Below is what I posted in a ‘chat’ request:
Hello. I just purchased All Discounts PRO and I have two problems.
1. I have a rule set up so that 3 or more items in the same category get added to the cart, it applies a 20% discount. However, when you add these items to the cart, the cart logo in the upper right hand does not change. It says 3/60 when it should say 3/48. However, if I click on the cart icon in the top right, it then shows 3/48 in the cart page. Why is this? This can be very confusing to customers who are told about the discount.
2. The checkout page does not reflect the discount line item anywhere. Again, the customers know they are getting a discount obviously, but this could greatly hurt future customers if they don’t see that the $48 is a discounted price for buying in bulk, and the retail is $60 without it.
I am using AccessPress Store theme, and have also tried Shopper. They both are doing this.