If you don't see the Examus icon in the upper-right corner of the Google Chrome browser, or it's inactive, it may mean that the extension is installed but it's still inactive (disabled). Open the https://chrome.google.com/webstore/detail/examus/nimiflpndioioljbankkeinmoohhcafa link and Activate this product:
 

 

 

You can also use the following link: chrome://extensions/. On this page, you will see a list of installed extensions. Make sure that the extension is in the list of installed extensions and it is active (enabled):
 

 

If the extension is not in the list, install it here:  https://chrome.google.com/webstore/detail/examus/nimiflpndioioljbankkeinmoohhcafa