Hello,

I saw the screenshot you attached. Please try adding the following code snippet in your child theme’s functions.php.

remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 30 );
add_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_add_to_cart', 15 );

Regards.
Xtemos Studios