Product Variation price not Updating

Hi,

I am using Woocoomerce for managing my store. For a lot of my products I have more than 50 variations so increased the variation count to 150. Now however when I choose the variations the price is not updating dynamically. If I add the product to the cart the price is correct so I know the price is registering correctly but how do I get the price to change onscreen for the variation chosen.

The variation is only shown to logged in users so if I provide the URL it won’t show the issue but if anyone can help i can provide access.

Any help appreciated !!

The page I need help with: [log in to see the link]