@witcher83 Please have a look https://championmacstg.wpengine.com/
Now I update plugin YITH Request a Quote for WooCommerce version from 2.12.0 to 2.21.0 and Add to Quote button is not working and I got a 403 error.
@witcher83 Right now its free version YITH Request a Quote for WooCommerce Version 2.12.0.
But even if I update it to some latest version (free) it breaks the site