Color of mobile menu links works fine https://prnt.sc/o8l9xc , you need to clear the cache of W3 Total Cache plugin and cache of the browser on your mobile.
As I can see, you have updated the theme but not Core plugin http://prntscr.com/o8l7t4 Please follow this article https://xstore.helpscoutdocs.com/article/37-plugins-update and update XStore Core plugin to 1.2.3 version, it should fix problem with shortcodes on your site.
Regards