Popover + Mailchimp


I’m using this plugin to aid capturing addresses for a mailing list that is using Mail Chimp. Is there a way/rule that will STOP the popover once you have registered with Mail Chimp? Currently have Mail Chimp set up to ‘return’ the user to a page on the site that has a ‘reward’ for opting in, but the popover appears again as you enter the site. Is there some way of determining the referrer, then adding the cookie to stop the popovers?