Fashe Issues with Cart and Quantity

I am having issues with Fashe, trying to get a quantity box on the product page doesn’t seem to work, and when the user tries to change quantities on the cart, the quantity doesn’t actually change. As a result, I am limited to a quantity of ONE for all items.

I am sure I’m doing something wrong, but I have confirmed that others are having similar issues with quantity in Fashe, so maybe there’s some help somewhere? I am happy to pay for support, if that’s an option. I definitely am not looking for free help on a free template – I just like the design and can’t seem to get it fully working.

Can someone help?