Howdy Michael,
Welcome to our support forums and thanks for reaching out to us. Sorry to hear about your frustration updating our plugin, let me help you with that 🙂
To update Events Calendar PRO first thing is to configure your license key. This article will show you how to do it → Finding and Inputting Your License Key. Once the key is configured you can go to ‘WP-Admin > Dashboard > Updates’ and see if there are any updates available for the plugin.
If for some reason (maybe the site is in an intranet or don’t have external access) you can perform a manual update of the plugin, but I don’t think this is the case.
Lastly I would recommend checking this guide out → New User Primer: The Events Calendar and Events Calendar PRO, for the basics of using our plugins.
Please let me know if you can update the plugin or still need help with it,
Best,
Nico