@xykon Ok, thanks. Downgrading LoPy did the trick, but I still find it very strange that a working setup stops working due to a code problem after +70 hours of normal behavior and no longer starts working even after factory resetting, flashing the latest firmware again and starting again with the exact python project code and firmware...
So what should I do next? Wait for a new LoPy firmware when the problem with get_wake_status is resolved? Can I follow some GitHub repository or just follow the forum here on this?