Why can I edit certain events but not others?

Why can I edit certain events but not others?

Editing an event depends on the permissions on the associated calendar or event, for example if someone else invited you to the event or the calendar is read only.
Why can’t I edit/ delete my events via the Android app?

Why can’t I edit/ delete my events via the Android app?

If you’re experiencing issues editing or deleting your events using the Android app, it may be due to an improper setup of your calendar(s). In order to fix this, please go to your native device’s calendar app => Manage Calendars … More