I have some issues with the template together with a component that I use. The component developer has written this:
The default bootstrap code has been customized by your Joomla template in ....../templates/luxon/css/custom.css and bootstrap.css file on your site. This is causing issues in your directory menu. The customization is complex and may affect other areas of your site if we make any changes. So kindly ask your template provider to make the changes to get the menu working. We are following the standard dropdown menu code from bootstrap in our directory.
Looking forward to hearing your comments.