Error: Redux Framework Warning select2-css CDN unavailable. Some controls may not render properly. Please wait a few minutes, then try refreshing the page. Unable to load some remotely hosted scripts.

If for some reason the actual remote CDN is down, the error should go away. If it doesn't go away here's what you need to know: the Redux theme options framework that handles the settings of the theme loads a few files from remote a remote location instead of loading them from your site but if your server is set not to allow remote / CDN files to be loaded then you will see this error.

You can either ask your hosting company to change that setting and allow remote update or host the files yourself. To do that you need to download the following plugin: Redux Vendor Support and install it on your site. Check the plugin's readme file for more info.