Fix & Edit woocommerce plugin for a wp shop

I'm building an online shop in wordpress using a theme called Scalia. I have some issues with my Woocommerce plugin that needs to be fixed and also I need some small things to customize for my Woocommerce plugin So the issues are: -Variable product option is not working. Whenever I create a variable product the options to select are not displayed and nor the image or add to cart button. So basically it's all bugged. I think this is caused by some kind of conflict between the theme and woocommerce plugin. I'll attach a picture to show you how this bug looks like. Now the second small thing I want is to add some features like: -When someone raises the quantity of a product or chooses a variable the total price to be displayed instantly on the same page. (so basically qty x price + the cost of the variable chosen) - Ill attach an example of how it should look like for this as well. -The last thing would be to remove a zoom effect from the featured image preview. (I'll add example image for this too)