I want to capture the like/unlike only from registered members, I selected logging method as “logged by username” in setting. I logged in as a user, likes a post and logged out. I logged in with another use in the same machine, I can only see unlike button instead of like and also displaying “no permission” error. I read wilcosky hinted cookies could be the issue here. Can someone help me how to change the class-ulike.php to fix this ?