How to solve
iOS / Android
Check if the calendar you want to display is turned on in the settings
- Tap the icon with four squares lined up at the bottom right of the bottom menu
- Tap "App Settings"
- Tap "Calendars displayed in other features" at the very bottom
- Turn on the calendar you want to display and tap "Save" at the bottom
*On iOS widgets, events from external calendars cannot be displayed
Restart your device
- Remove the widget
- Restart your device
- Re-add the widget
iOS
Set calendar permissions to "Full Access"
On your device, go to "Settings" → "TimeTree" → "Calendars" → select "Full Access"