Graphic Customization
Colors, icons (via Font Awesome), text, and buttons are customizable. This allows you to create aesthetically pleasing popups that match your website's design.Repetitive Behavior
By default, the popup reappears on each visit after a configured delay. This can be perceived as intrusive if misused, but it's possible to add cookie logic to prevent repetition.Risk of Spam
The plugin itself does not encourage spam, but its misuse (too frequent popups, aggressive advertising) can negatively impact the user experience and be considered spam.
From @sawsenbenkhadhr