Hello There,
Thanks for writing in! I have logged in to your site. I would recommend that every time you update the theme, plugins or any changes to your site, please do the following:
1.) Since you have installed Autoptimize plugin, please delete the cache.
2.) Since you have installed WP Fastest Cache, please delete the cache and regenerate the minified JS/CSS files
3.) Since you are using CloudFlare, please login to CloudFlare and purge everything in the cache. It is also recommended that the JS/CSS minify in the Speed tab is disable. Please see this tip: xthemetips.com/using-cloudflare-rocket-loader-with-x-pro-and-x5/928/
4.) And lastly, since you are using SiteGround, please clear your site cache or temporarily disable the supercacher in your hosting panel? The SuperCacher is developed by SiteGround exclusively for their customers. It increases the number of hits a site can handle and boosts the website loading speed. The SuperCacher includes 4 different caching options for maximum optimization of your websites. You can access the tool by clicking on the SuperCacher icon in your cPanel.
For more information about this, please check it out here: https://www.siteground.com/tutorials/supercacher/supercacher_intro.htm
Please let us know how it goes.