Hi Renee,
Sorry to hear the update is giving you trouble. The link you posted is a working download link for me. Have you tried doing it in another browser? You also may need to install the updated version manually.
To do that, go to your downloads page on tri.be (https://theeventscalendar.com/my-account/downloads/) and download the latest version of Events Calendar PRO. Then head back to your dashboard and on the Plugins page, deactivate and delete the PRO version you’re running now (don’t worry, you won’t loose your data- although we always recommend backing up your site being updating). Then you can upload the downloaded .zip file just like you would a new plugin.
If you have any trouble, don’t hesitate to let me know and I’ll be happy to help.
Best,
Leah