Radio button AJAX cart

I’m currently using your plugin: https://woocommerce.com/products/all-products-for-woocommerce-subscriptions/ and I would like to know if there is a PHP snippet that would allow the cart to automatically update when a user selects a subscription with the radio buttons, so the customer doesn’t have to click on “update cart” every time.

The page I need help with: [log in to see the link]