Each time I update to The latest firmware, my E35 can no longer stay connected. I go through reset WIFI and it show connected, then ask me for the room, then it displays the same message that the unit is offline. If I factory reset to original firmware, it works. Can you please check the firmware update and correct it?
We are sorry for the trouble you are facing.
Could you please tell us version of firmware version which unit got offline frequently and brand of your router?
Or you could contact support via email: support@roborock.com .
Same thing for me with s5