If your Roomba i7 isn't working properly, you may fix it by learning how to reset it. Press and hold the Clean button for 20 seconds until the light ring stops working to do a soft reset. Wait for the Roomba to reset after releasing the button. Use the "Settings" section of the iRobot Home app to perform a factory reset. Resetting gives your Roomba i7 a new start by fixing syncing iss... https://roombasmarti.com/how-to-reset-roomba/