UPDATE: How to clear cache and cookies from your Internet Browser if you struggle to login

1. If you are using Internet Explorer, Edge, Google Chrome, or Mozilla Firefox you can quickly clear cache with a keyboard shortcut. 
   For Windows, while in your browser, press Ctrl + Shift + Delete simultaneously on the keyboard to open the appropriate window.  
   Use Command+Shift+Delete for Mac.
2. Select “Cookies and other site data” or “Cookies and website data”, as well as “Cached images and Files” or “Temporary Internet Files”
3. Click on the appropriate button.  Either Clear Data/Clear Browsing Data in Chrome, “Clear Now” in Firefox or Delete in Internet Explorer.
4. IMPORTANT: Be sure and close/quit the browser and restart it after clearing the cookies & cache.

Helpful links to clear cache and cookies:

1. How to Clear Cache and Cookies on Windows or Apple Platform
2. How to Clear Cache and Cookies on Android Phone
3. How to Clear Cache on Apple Phone