Event Title Not Updating

I have a client who has made changes to an event title (on their google calendar directly) that is being displayed on this widget’s event list. Their changes show up on the google calendar iframe in the footer, but it does not show the updated title in this widget.

I’m not sure what is causing this to happen?

The title change is important because they add “Canceled” to the names of their fitness classes so members can easily see when a class is canceled.

site:
https://www.nckwellness.com/

https://www.ads-software.com/plugins/google-calendar-widget/