@LTom today I looked at the appstore again and found an update for tapo app. After the update was done the problem was solved. Now it is posibe to switch the scheduled time settings.

@Wayne-TP Hey, yes I have opened and downloaded and reinstalled the tapo-app from Appstore. No change. it is still not possible to tag the time settings on/off. I wonder if Ineede to delete the app...

For unknown reasons is is not possible to switch on of off the settings in the time schedule. this Feature was possible in the past but now it falls. What can I do ???