If the add-in is not working properly, you can clear the cache so the add-in gets a fresh start. There are different ways to do it, depending on which operating system your computer runs. Below are guides on how to clear your cache in the right browser:
For Windows:
Internet Explorer 11: https://clear-my-cache.com/windows/internet-explorer-11.html
For Windows:
Internet Explorer 11: https://clear-my-cache.com/windows/internet-explorer-11.html
If your version of the add-in is using Microsoft Edge, things get a little more complicated. We have created this guide that you can follow, download it here.