Ok, something shady going one here…
- The ‘cloud option’ was not visible in my settings.
- I went -from my phone- to the my homey web page. I had two options, start the Honey app or start the web layout . I choose the web layout
- Over there I saw ‘cloud connected’
- Then started the Homey app and suddenly the cloud option was visible in the menu
- Turned off WiFi and the app works as it should
So maybe the app automatically only is ‘local’. When I connected to the my homey page it ‘discovered’ that there was a hidden cloud world that it could access. And after that it ‘knows’ it is there and uses it.