Hi, the On/Off Button started blinking very fast with red light while my Roborock S55 ws in the dock. Once I tried to turn it off it started blinking again very fast but this time with white light. I tried again to turn it off – but no effect; I pressed Reset button – no effect; then I tried reset to factory default – it stopped blinking for 3-5 sec and then again it started blinking white. Note - there was no voice prompt from the speaker; Wi-Fi indicator light is off and device does not have connection with MI Home App. Now the On/Off button is just blinking fast over-and-over. Any clue?