HELP PLEASE

[GNTINFO]

Hello,

I have a product with size SM XL, the price is the same, however I made a promotion only for size S, if you buy more than 10 units, you will have 10% promotion, 20 units, 20% of promo, for the moment everything is OK.
When I go to the product page I have the table which indicates the promo for size S, but when I change size the table remains, I have to refresh the page so that it can be removed.
Second problem on the product catalog, in the image of this product, it has 10% promotion, I want it to be displayed up to 20%.