Hi,
You have a plugin or script that is causing javascript conflict with your theme on your website, resulting in multiple script errors.
Please see screenshot. https://i.imgur.com/6KsYoot.png
If there is no errors, you would not see these strange HTML codes in your menu. Those codes are actually part of your mobile menu, which should only be visible in mobile devices.
Use a mobile device to look at the pro version’s demo site.
https://demo.theme4press.com/evolve/
Although it’s pro version but it has the same menu codes. There is no such strange HTML codes.
Purge your wp super cache and temporary disable it, then proceed to disable one plugin at a time to find the plugin that’s causing this conflict. If you have any custom script, remove it to see if your errors are fixed.
If you do not eliminate this script errors, you will definitely have more strange issues later on.
Covering this up using CSS codes is not going to really fix your issue.
Thank you.