Hello,
please replace the above code in the customizer plugin with this one.
add_filter('wplms_quiz_retakes_left','wplms_passed_quiz_retakes',10,2);
function wplms_passed_quiz_retakes($remaining_retakes,$quiz_id){
$passing_score = get_post_meta($quiz_id,'vibe_quiz_passing_score',true);
if(isset($passing_score) && is_numeric($passing_score)){
$user_id = get_current_user_id();
$score = get_post_meta($quiz_id,$user_id,true);
if($score >= $passing_score){
return FALSE;
}
}
return $remaining_retakes;
}
this should do the trick.