EDIT

@dbarker for android/ios devices they would need to include support for those devices too. But at the same time, you have solutions, for free and for additional fee. One of them would be using some...

Fae wrote Dear @btx, Thank you for your detailed information. Our support engineer still needs your help to check more info to look into the firmware upgrade issue for you. Do give it a reply if you...

@Fae thanks for reply, I've backed up running logs and other logs exactly at the point where I saw first disconnect, guess that should help the support Is the switch located in a different location...

EDIT

It was running for a day, next day in logs it says device disconnected and appears as disconnected: Something seems to be wrong with controller/firmware combination. Device has same IP, still managed...