Hi,
Many others reported that their online routers showing as offline, but mine is the opposite.
I unplugged the router few days ago but still showing as screenshot below.
I doubt that this kind of issue is suitable to be posted as a "topic" on this forum, however "Support" menu item on GoodCloud leads me to here. 
Could you PM me your device MAC address? I will check it.
Sent the MAC. 
It seems that the program did not process the device offline message in time, or the program was deploying a new version at that time. We will look into the reason. I manually marked your device as offline. Thank you very much for your feedback.
I don't remember the exact time I unplugged, anyway maybe it was close to or during the downtime. I can guess the reason now.
This time it was fine because I already knew it was unplugged, but I expected I'll be noticed if there's any unexpected disconnection occurred.
I don't know anything about how GoodCloud system works and I think there are already similar logics are running, however IMO it'd be better to have an alternative logic to handle exceptions like this. e.g., Mark a device offline unconditionally if it can't be reached for 3+ consecutive times and/or 120+ seconds.
Thank you very much for your valuable feedback and suggestion; we will carefully consider and evaluate how to improve the system to better handle exceptional situations.
