Show only one OptinMonster campaign per page visit regardless of campaign type.

limit-om-campaigns.js

<script>
/**
* Limit OptinMonster Campaigns
* @author Erica Franz
* @url https://fatpony.me
* @desc Show only one OptinMonster campaign per page visit regardless of campaign type.
*/

// Run this script when the first Campaign is shown
document.addEventListener('om.Campaign.afterShow', function(event) {
	// Locate and remove only empty HTML placeholders for campaigns
	document.querySelectorAll('[id^=om-][id$=-holder]:empty').forEach(e => e.remove());
} );
</script>