Hi Men ! This is my first message ever in that kind of forum; I just want to say you that i getting crazy since 3 hours looking for reason of an 500 internal error causing by this “feedback” who never gave me any response.. So the solution was to disable that pluggin ==> WP-Mail-SMTP; its look like he’s not a friend of your pluggin; i just want to share my total happiness of debugg with you and hope that it will help ! Allez Salut