Price not adjusting like the quantity normally does.

didnt post the page link because I cant have this functioning incorrectly on my live site… but this is what im running into…

i have a design plugin that allows users to select multiple options, as they select options the price changes live on the product page… It works well, when I change the quantity in the original woocommerce box, the price changes in the plugin like normal… When I activate this plugin, and select any quantity level, the price displays zero, and does not change… However, when i to to the Cart page, the price is there as it should be…

So not sure where the plugin is lacking… if i can resolve this problem then i can purchase this plugin so i can control individual products…