Too few information to be able to help you. Are the leads qualifying for the campaign and have a "do nothing" activity in the activity log, or is it because they do not qualify, and then the issue is on your triggers, your filters or your qualification rules?
Thanks for your answer. Yess the leads actually don't meet any criteria in choice 1 and 2, choice 3 should apply here but it does not (because i am testing with different emails and new ones to make sure they don't meet any of these criterias). Instead, when i look at the activity log, i see that it acts as if they met one of them, and it ignores the change.