Groupware: Accepting an invitation does not show up in Nextcloud's calendar (app)

[kesselb]

User story:

• Alice is using macOS with Apple Mail and Apple Calendar.
• She added her Calendar through Internet Accounts.
• When accepting an event invitation in Apple Mail, it does not end up in Nextcloud Calendar.

Todo:

Write a troubleshooting guide leading through the necessary steps

1. Double check if events from Nextcloud Calendar are shown in Apple Calendar
2. Recommend to use app passwords
3. Explain macOS default calendars concept
4. Make the user aware about the ability to pick an calendar when importing an event