wpcf7_before_send_mail not working after update

https://contactform7.com/2014/07/14/contact-form-7-39/

Hi,

I’m having the same issue. I’m not using any additional CF7 add-ons though.

Any help greatly appreciated.
Thanks

can you explain how to change recipient please?
function wpcf7_modify_this(&$wpcf7_data) {
$wpcf7_data->mail[‘recipient’] = “Mark <[email protected]>”;
}
add_action(“wpcf7_before_send_mail”, “wpcf7_modify_this”);
i did something like that and the ajax keeps loading forever..