Unhappy with Oregon Scientific WMR86NS Complete Home Weather Stations with Colour LCD Screen

During June 2020 I bought 2 Oregon Scientific WMR86NS Complete Home Weather Stations with Colour LCD Screen from Loot. One or myself and one as a gift. Since installing the two devices the rain-meter would not work and when it did work occasionally it lost its signal with the rain-meter even I have I place the rain-meter and panel in close proximaty. I have replaced all batteries on numerous times with no positive effect. The rain-meter is the most important part in my case and I am very disappointed with the appliance. I do not know whether there is a warranty on the devices. If I can not have the issue rectified it would be useless.