When you update a calendar subscription, this change is not reflected immediately in your calendar. You can just wait from one day or, in worst cases, one week.
There is no direct way in WeekCal to force a refresh. But you can do that in iOS Calendar and the results will be shown by WeekCal as well.
To do this, please take a look at the refresh instructions for iOS Calendar.
Updated Wed, 08 Feb 2023 12:08:23 +0000 UTC