Variable Product Problem

Hi @pempol85!

There is a cut off at pre-loading 30 variations: https://github.com/woocommerce/woocommerce/blob/657c312caeef7345b225ffb899da6dbb84692936/includes/wc-template-functions.php#L1027).

In the front-end, if a variable product has more than 30 variations, the data will be loaded via AJAX rather than handled inline. It is possible to change this quantity using the woocommerce_ajax_variation_threshold filter.

The default variation threshold in the following code is 100

add_filter( 'woocommerce_ajax_variation_threshold', 'wc_ninja_ajax_threshold' );
function wc_ninja_ajax_threshold() {
    return 100;
}

You can increase the value as need be, and here is how to add the code to your site:

http://rynaldo.com/how-to-add-custom-code-to-your-woocommerce-wordpress-site-the-right-way/

Cheers!