Answered: How to prevent users level registered to sending private messages in a q2a forum?

in qa-include/pages/user-profile.php  

change this at line 791

if (qa_opt('allow_private_messages') && isset($loginuserid) && $loginuserid != $userid && !($useraccount'flags'] & QA_USER_FLAGS_NO_MESSAGES) && !$userediting) {

to this

if ((qa_opt('allow_private_messages') && isset($loginuserid) && $loginuserid != $userid && !($useraccount'flags'] & QA_USER_FLAGS_NO_MESSAGES) && !$userediting) || qa_get_logged_in_level() >= QA_USER_LEVEL_SUPER) {