Hey Amy,
You can manually upgrade with only a few short steps.
First download a copy of the latest version of Events Calendar Pro here → http://theeventscalendar.com/my-account/download
Next, download a copy of the latest version of The Events Calendar here → http://wordpress.org/plugins/the-events-calendar
Then make a backup of your site and database. This is optional, but I recommend doing this before proceeding and if you choose to proceed without backing things up it is at your own risk and against our recommendation. Not sure how to back up your site and database? Well, this is an essential skill for anyone owning/running a website, so it’s a great time to learn. 🙂 Turn to the old Google.com and search for simple methods; there are dozens of easy, simple ways to back up a site and a database.
Once things are backed up, DELETE (not just “deactivate”, DELETE) the existing versions of Events Calendar Pro and The Events Calendar. This will not erase any calendar data. But you have the backup from the previous step just in case.
Finally, once those are deleted, install the new versions you downloaded in Step #1. Activate them, add your license keys, and you’re good to go!
Cheers,
George