Hi Tom,
Thanks for writing in! First of all make sure that you’re fully updated by following our version information here (https://theme.co/apex/forum/t/troubleshooting-version-compatibility/195) and update accordingly.
If you’re using a caching plugin, try purging your server cache and test your issue. Also try disabling CSS/JavaScript minifications from your caching settings.
If you’re still having issues, try disabling your 3rd party plugins and check your issue further.
If you’re using a child theme, try switching to your parent theme and see if you’re experiencing any issues with your child theme customizations.
In case if could not isolate the issue, provide us with an example page URLs to your issues so that we should be able assist you further.
Thanks!