WeekCal - Push & Fetch New Data

 To receive updated data for synchronized calendars and calendar subscriptions regularly please check that your iOS System Settings are correct.

1. Select device Settings
2. Select Passwords & Accounts (Accounts & Passwords in iOS11, Calendar in iOS10 or Mail, Contacts, Calendars in iOS9 and below)
3. Select Fetch New Data (in the Accounts section)
4. Set it to Push for regular accounts (then they will be refreshed automatically) and
   set all Calendar Subscriptions to Fetch Every 15 Minutes.