"Added to cart notice" displays even if I have the setting disabled

Hi Roberto,

The option in customizer is this cart panel actually :
https://www.screencast.com/t/7zzQrjjtb

The green bar should be a Woocommerce notice which can not be removed within customizer options. (I might be wrong since I can't read Italian)

You can try this PHP snippet to remove it:
add_filter( 'wc_add_to_cart_message_html', '__return_false' );

Adding PHP: https://docs.generatepress.com/article/adding-php/

Let me know if this helps :)

Thanks :-)
That actually did the trick.
Now I need to understand why in the other websites is not happening.
Thanks again @ying and have a nice day.

Check if the other site is using the same or similar custom function :)

Or other plugins?

You are welcome! Have a great day too!