@Martin_Smith11, sorry for the inconvenience the Robovac caused. Please rest assured that we always stand behind our products. And we are more than glad to help you exchange it if the issue turns out to be with it.
Could you please try the following solutions?
1.Tap a little harder on the bumper to see whether it’s stuck. And if necessary, remove any hair and debris from them. Also, could you please make sure you have removed the plastic film on the bumper?
2. Use a dry cloth to clean the bumper.
Also, kindly advised that the RoboVac detects with infrared ray and very dark-coloured objects/ carpets/floors absorb the ray, so the RoboVac will not be able to recognize them. Could you please put the Robovac in a place surrounding by the furniture in the light colour for a retry?
If the problem persists, could you please contact us via our "support@eufylife.com" so we can assist you further?
We will glad to help you replace a new unit once we confirmed the issue and your order detail.
We appreciate your time and looking forward your reply!