I probably overlooked but I can not find the answer to two questions:
is it possible to start the app in the ‘devices’ screen instead of the ‘home’ screen. After all you always first have to go to the devices screen to control devices.
is it possible to order the devices in the room in the devices screen? Currently it is alphabetical but I would like to group them.
No, but you can use this workaround: put a number in front of the device.
Like:1. temperature sensor X, 2. Light bulb Y, etc.
Homey sorts the devices then according those numbers.
You could extend this like 1.1, 1.2, etc as well if you want to combine sensors, lights, etc.