Please raise a KDE Bug Report: <https://bugs.kde.org/>
This issue has also been reported in the following discussions –
- <https://discuss.kde.org/t/new-problem-with-korganizer-and-google-calendar-local-changes-do-not-get-saved/13062>
- <https://discuss.kde.org/t/no-longer-able-to-access-google-calendar-in-korganizer/5240/4>
- <https://invent.kde.org/pim/kdepim-runtime/-/merge_requests/129>
- Documentation here: <https://docs.kde.org/stable5/en/korganizer/korganizer/managing-data.html>
A “me too” can sometimes work wonders …