Preview shopping cart and add/remove product quantity buttons not working when the plugin is active

[Casosycosasdecasa]

I have a web store with WooCommerce with Orchid Store theme. When you are in a product page, the buttons to add more quantity of the product and the preview cart (clicking the shopping cart icon shows you a preview of the cart before going into cart page) don't work at all. They do nothing. I have tested it with all the plugins activated but AliDropship for WooCommerce.

Anybody has some solution or has experienced some similar before? How I could fix this?
Thanks in advantace