If you choose to enable https for your main domain, you have to make sure that all external scripts, files and images are also called over https. The monitus code is typically installed in a variable on the Variables page. Our script tag should look something like:
<script type="text/javascript" src="http://ldn.monitus.net/js/monitus.js"></script>
Please change this to our secure version (which is already used on the checkout):
<script type="text/javascript" src="https://c3319586.ssl.cf0.rackcdn.com/js/monitus.js"></script>
Please also make sure you use the latest version of our code. If you need help, please contact us.