[Plugin: woocommerce] Variable product not responding

Hello all,
I have been using woocommerce for a personal shop for a few months now and never had a problem with this. It started all of a sudden a couple days ago when I logged on. This has never happened before.

Whats supposed to happen: When I select a variation on the product page, it shows the picture and stock amount, then you can add the desired amount to your cart.
What actually happens: When I select a variation on the product page the picture flashes, and nothing happens. No stock amount, not picture change, and no add to cart button.

I tried to follow steps written on other posts to delete the …variable.php file, which I did, and nothing happened.

I hope someone has a solution to this problem, being I can not have my site online with the problem persisting.

Thank you!