Clearing the cache and cookies from a web browser is an important first-step for almost any troubleshooting for internet browsing. The 'cache' is a tool used by your internet browser to speed up the page loading process. However, sometimes it can cause a problem when websites are updated and developed as files saved in the cache may conflict with what's actually coded into the website. Clearing cache and cookies is a way we can be sure that any issues you may come across are actually something wrong with the website, rather than inconsistencies caused by using different browsers.
If you are using Internet Explorer, Edge, Google Chrome, or Mozilla Firefox you can quickly clear cache with a keyboard shortcut. While in your browser, press Ctrl + Shift + Delete simultaneously on the keyboard to open the appropriate window.
IMPORTANT: Be sure and close/quit the browser and restart it after clearing the cache and cookies.