Display swatches only on specific products

I yould like to use the plugin together with another plugin called “WPC Product Bundles”
Unfortunately if I include a variable prduct in the bundle, the swatches appear but if I click on any option, the following woocommerce message appears: “Sorry, no products matched your selection. Please choose a different combination”

Disabling “Woo variation swatches” on this specific product page would also be a good solution for me.
I tried the following code, but no success:

add_filter( 'option_active_plugins', 'disable_var_swatches' );
function disable_var_swatches($plugins){
	if ( is_product() && is_single('3275')) {
		$key = array_search( 'variation-swatches-for-woocommerce/variation-swatches-for-woocommerce.php', $plugins );
		if (false !== $key ){
			echo $key;
			unset ( $plugins[$key] );			
		}
	}
	return $plugins;
}

Please help me find out what could cause the problem. Do you need any credentials to my page?