Şu eklenti yardımcı olabilir.
https://wordpress.org/plugins/contact-form-7-dynamic-text-extension/

//Mevcut kullanıcı bilgilerini çeken kısım

Current User Info

Get data about the current user – assuming they are logged in. Defaults to user name, but you can set the key to any valid value in
https://codex.wordpress.org/Function_Reference/get_currentuserinfo

CF7_get_current_user

[dynamictext dynamicname “CF7_get_current_user”]