Hi,
Sorry for the issues you are having. I can help troubleshoot this with you.
Can you please confirm you are following all these steps:
Visit License Tab
Enter License Key
You get a Green License Valid Message
You are then clicking “Save Changes”
Then you get a “License key(s) updated.” near the top of the page.
Also you can can always download the latest version from your account here on theeventscalendar.com and manually update following these steps:
Manual Updates
Let me know if it is not working after following those steps and we can do some troubleshooting steps next.
Thanks