Limited popup like once per month and user
check if

splashify module can help you here


  Display a splash page anywhere on your site by redirecting the user,
  showing a lightbox, or displaying a popup. This module is designed to
  be search engine friendly, mobile device friendly and offers multiple
  configuration options.Instead of using cookies to determine when the
  splash page shows up, we use jStorage.


Popup Message


  Display popup message for users once per browser session.