I have just encountered this problem, because I have set up an older tablet as backup device instead of the phone, I used before. I was not aware that the four devices are split into 2:2 mobile/desktop. As my tablets don't have SIM-cards, I need the phone as well to get updated information, submit flightplans etc., when I don't have access to a WiFi.
If you do not consider to release the mobile/desktop splitting of 2:2, I would like to know, whther there is a way to keep the chart and route data up to date on the backup device without kicking out another device.
Or, at least, would it be possible to manage the devices in a way that one can decide, which device is kicked out without getting a surprise at the next start?
One more thing came to my mind. Consider the following scenario:
I was logging in on two devices.
Now I olog in on a third one to update routes and immediately log out afterwards.
Does then still one of my other devices need a login, even if I didn't use them since I logged in with the third one?