Oh - it seems i occupied a wrong chat 
I saw, that @ibimms had the same issue Eurotronic Spirit Zigbee Thermostat again. In the screenshot there are also no options.
Strange thing: After a system reboot I saw this options for a short time. But now they are gone again.
Event if the logs look fine, after changing my Systemmode neither the value for System Mode changed nor the physical device changes.