1. Click the cog icon on the top right of the screen.
2. Select Preferences from the drop down menu.
3. From the Preferences page, click System Settings on the right.
4. Then click the Reset Cache button.
5. A popup will come up on the of the screen confirming "Your cache has been reset.".
6. Press Ctrl + F5 on your keyboard to refresh the page for Windows or Command + R for Mac.