Steps
- In Vrbo open Calendar, Availability and “Connect your calendars”.
- Select Add.
- Under “Export Vrbo calendar”, select Copy link.
- Create a source in kalenderabgleich.de and paste that link as the import URL.
- Copy the kalenderabgleich.de export URL.
- Import that URL into Vrbo.
- Remove every other calendar connection.
Final step: Remove all old direct calendar connections to other portals from the provider. Only the kalenderabgleich.de calendar should remain connected.