In order to speed up the theme and get rid of bloat coming from unwanted icons from the theme, we have a new icon set added to the latest version of the theme. We have gone from 2 MB size to 200-300KB in icon file size.
Pls change the references to icon-* in your HTML to match those listed here – https://www.livemeshthemes.com/wp-content/uploads/cosmic-icons/demo.html. For example, in your timeline view, you need to change references to icon-calendar11 to icon-calendar or icon-calendar-o as supported by the new version.
Pls read the migration instructions in the help documentation once to get a better perspective of the changes done to the theme. Detailed instructions are provided there on how to handle upgrades to 5.x version of the theme.
Pls use a plugin like https://wordpress.org/plugins/font-awesome/ in case you need icons other than what is provided with theme.